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11 Common Waterborne Diseases: Symptoms and Prevention

Disease which are commonly found in water.

by Jeremiah Castelo/

Water certainly is the source of life.

But with the potential to harbor pathogens that can cause serious harm to the human body, careful precautions must be taken in determining when it is safe to drink and when it isn’t.


The World Health Organization states that more than 3.4 million people die from water borne diseases every year, making it the leading cause of disease and death in the world (Berman, 2009).

The pathogens responsible for these diseases come in the form of viruses, bacteria, or protozoa, all of which are invisible to the naked eye.

In this article, we’ve covered the 11 most common waterborne diseases, their symptoms and causes, along with which purification method can best eliminate them.

The World Health Organization states that more than 3.4 million people die from water borne diseases every year, making it the leading cause of disease and death in the world


Viruses are infectious agents that are very diverse in shape, structure, and behavior, and can only replicate itself when inside the cell of an organism. Once a cell’s nucleus becomes infected with a virus, that infected cell then reproduces identical copies of itself at an alarming rate, with the ultimate goal of taking over the entire system. Viruses can infect humans, animals, plants, and even bacteria.

A healthy human body will produce an immune response to a viral infection, ultimately eliminating the virus. These immune responses can also be produced by vaccines which build immunity to specific viruses. While anti-viral medications can be used to treat viral infections, antibiotics have no effect on viruses.


Pathogen: Norovirus

Disease: Gastroenteritis (Traveler’s Disease)

Effective Water Purification Methods:

  • Iodine Treatment
  • Solar Purification
  • Boiling
  • Distillation
  • Chlorination
  • Reverse Osmosis
  • Ultra-Violet Light

More commonly known as Hong Kong Dog, Delhi-belly, Aztec Two-Step, or Traveler’s Disease, Gastroenteritis infects 20% to 50% of international travelers each year.

Norovirus, the virus responsible for the estimated 10 million cases of diarrhea each year, is a highly contagious disease that attacks the digestive system and is typically transmitted through infected food and water or contact with infected surfaces.

The virus, once inside the body, disrupts the digestive tract causing loose stool and abdominal cramps. The intestines and stomach become inflamed, causing severe stomach pain, nausea, diarrhea, vomiting, and fever.

Symptoms usually develop 12 to 48 hours after infection and cease after 1 to 3 days with a competent immune system. The virus is more likely to cause dehydration in older adults, younger children, or those with other illnesses due to excessive vomiting and diarrhea (CDC, 2018).


Pathogen: HAV (Hepatitis A Virus)

Disease: Hepatitis A

Effective Water Purification Methods:

  • Iodine Treatment
  • Solar Purification
  • Boiling
  • Distillation
  • Chlorination
  • Reverse Osmosis
  • Ultra-Violet Light

Hepatitis A is a communicable liver disease usually transmitted through fecal matter in contaminated food and water. Those who travel to places where Hepatitis A is common and not properly treated are at much higher risk of infection.

Symptoms can be mild, lasting several weeks, or can be severe enough to last months. They usually occur within 2 to 6 weeks of infection and can include tiredness, muscle soreness, loss of appetite, fever, stomach ache, light-colored stool, dark yellow urine and yellowish skin. In rare cases, Hepatitis A can cause liver failure and death, but is more common with the elderly or with those compromised immune systems (CDC, 2017).

The antibodies produced as a result of the infection last for a lifetime and help protect the body against reinfection of the virus.


Protozoa are single-celled eukaryotes which feed on organic matter and can either be free-living or parasitic. They are similar to algae but too small to be seen without a microscope. Parasites are a type of protozoa which thrive at the expense of a host and usually dwell in fecal matter. They can often live within a host undetected for long periods of time due to their resilient nature.


Pathogen: Cryptosporidium

Disease: Cryptosporidiosis

Effective Water Purification Methods:

  • Specified Filters
  • Boiling
  • Distillation
  • Reverse Osmosis
  • Ultra-Violet Light

Cryptosporidiosis is a diarrheal disease caused by a microscopic parasite called Cryptosporidium. This parasite is protected by an outer shell which allows it to survive outside of a host for long periods of time, making it resistant to chlorine treatment.  “Crypto,” as both parasite and disease are commonly known, lives in the intestines of infected humans and animals and is carried through the stool. Crypto is typically transmitted through coming into contact with water that has been contaminated with fecal matter containing the parasite.

Crypto is recognized as one of the most common water borne diseases in the United States, with an estimated 748,000 cases occurring annually. Though usually found in both recreational and drinking water, the virus also transmits through dirty swimming water, uncooked contaminated food, and close contact with infected people or animals.

The most common symptoms of infection are stomach cramps, watery diarrhea, vomiting, fever, and weight loss. Symptoms usually begin 7 days after infection and can last up to 2 weeks. Those with weakened immune systems are likely to develop more severe and even life-threatening illnesses (CDC, 2017).


Pathogen: Giardia

Disease: Giardiasis

Effective Water Purification Methods:

  • Specified Filters
  • Chlorination (45 min.)
  • Iodine Treatment (50 min.)
  • Boiling
  • Distillation
  • Reverse Osmosis
  • Ultra-Violet Light

Giardia is a highly communicable microscopic parasite usually found in soil and contaminated human feces. Though its main mode of transmission is through contaminated water, it is also typically found on food and unsanitary surfaces. Like Crypto, Giardia also has a protective shell, allowing it to survive harsher conditions and making it more tolerant to certain disinfection methods such as chlorination. In order to kill Giardia through chlorination, allow the water to sit for 45 minutes, rather than the standard 30 minutes. For iodine, it’s 50 minutes.

Giardiasis, the disease which Giardia causes, is a global disease. It infects 2% of adults and 6 to 8% of children in developed countries worldwide, and hospitalizes about 5,000 people in the United States every year.

Children in childcare settings, outdoorsmen who drink unsafe water, and international travelers are at higher risk for Giardia infection. Symptoms usually start 1 to 3 weeks after infection and can include fatigue, vomiting, nausea, loss of appetite, greasy stools, diarrhea, bloating, excessive gas, abdominal pain, and headaches (CDC, 2015).


A bacterium, singular for bacteria, is a single-celled organism that lives as part of a colony whose numbers can reach into the billions. They are found in almost every environment on earth and can withstand a wide range of conditions and temperatures. Bacteria aren’t necessarily harmful to the human system. In fact, tens of trillions of microorganisms which include over 1000 different species of bacteria are responsible for the proper and healthy functioning of our digestive tract (Gut Microbiota).

Bacteria are extremely adaptable and can build resistance to antibiotics over time. Due the increased amount of processed foods that humans have consumed through recent years, digestive tract bacteria have adapted to use both organic and inorganic material as a food source.


Pathogen: Campylobacter Jejuni

Disease: Campylobacteriosis

Effective Water Purification Methods:

  • Specified Filters
  • Iodine Treatment
  • Solar Purification
  • Boiling
  • Distillation
  • Chlorination
  • Reverse Osmosis
  • Ultra-Violet Light

Though most commonly transmitted through eating raw or uncooked poultry, Campylobacter can also be transmitted through contaminated water, contaminated food, contact with animals, and drinking unpasteurized milk.

With a strong enough immune system, it is possible not to show symptoms at all after becoming infected. However, for those with weakened immune systems, such as people with AIDS, blood disorders, or those receiving chemotherapy, Campylobacter can spread into the blood stream, causing a life-threatening infection.

Symptoms of the disease are diarrhea, fever, stomach cramps, and vomiting, and typically start within 2 to 5 days after the infection.

About 1 in 1000 people who are infected with Campylobacter can develop GBS, a more serious disease that affects the immune system.

Most people recover from the disease within a week, although the bacteria may remain in the stool for several weeks, posing risk for further person-to-person transmission.

Though not often fatal, this bacterium is one of the four most common cause of diarrhea around the world. Every year, it affects around 1.3 million people in the US and 550 million people globally. For reasons unknown, Campylobacter infection has been increasing in developed countries for the past several years (CDC, 2017).


Pathogen: Legionella

Disease: Legionnaires’ Disease

Effective Water Purification Methods:

  • Specified Filters
  • Iodine Treatment
  • Solar Purification
  • Boiling
  • Distillation
  • Chlorination
  • Reverse Osmosis
  • Ultra-Violet Light

Legionnaires’ disease is a type of pneumonia caused by Legionella, a bacterium found in fresh water environments such as lakes and streams. It becomes a health concern when the bacteria make its way into human-made water systems such as water tanks, hot tubs, plumbing systems, and showerheads and faucets. It thrives in water temperatures between 95 to 115 degrees Fahrenheit.

Unlike most water borne diseases, Legionnaires’ disease isn’t transmitted by direct human contact, but through tiny water droplets in the air, or mist. A person becomes infected when the water droplets are breathed in and enter the lungs.

Legionella derived its name from its first outbreak in 1976, when 129 out of 2000 people who attended an American Legion convention became infected. Among those infected, 29 died. In the US, there are between 8,000 are 18,000 reported cases of Legionnaire’s disease every year. About 10% of those who contract the disease die.

Many people who are exposed to the bacteria may not even develop the disease. However, there are risk factors that increase the likelihood of infection such as old age, chronic lung disease, smoking, and a poor immune system. Symptoms of the disease include cough, fever, muscle pains, shortness of breath, vomiting, and occasionally, diarrhea.

There is no known vaccine to immunize from the disease. Taking clean water precautions, especially with drinking water, is a one way to prevent exposure. If infected, antibiotics and hospitalization will be required (CDC, 2018).


Pathogen: Shigella

Disease: Shigellosis (Dysentery)

Effective Water Purification Methods:

  • Specified Filters
  • Iodine Treatment
  • Solar Purification
  • Boiling
  • Distillation
  • Chlorination
  • Reverse Osmosis
  • Ultra-Violet Light

Commonly known as dysentery, Shigellosis is a highly contagious water borne disease caused by Shigella, a kind of bacteria that thrives in fecal matter. Transmission can occur through drinking contaminated water or when a person puts infected material in his/her mouth. Frequent handwashing is an effective way of limiting Shigella transmission.

Symptoms begin 1 or 2 days after exposure to the bacteria, and resolve within 5 to 7 days with a healthy immune system. Some might not show any symptoms at all but are still capable of transmitting it to others.

Infected people will show symptoms of fever, stomach pains, and diarrhea. Those who are more likely to contract the disease are young children, travelers, and those with weakened immune systems.

The Shigella bacteria can cause severe complications like dehydration, rectal bleeding, and seizures in small children. The most severe of complications is death by contamination of the bloodstream. Of the 700,000 deaths each year, most of these fatalities happen in developing countries where there are very few water treatment programs and where sanitation is a constant challenge.

An estimated 18,000 cases of Shigellosis occur in the United States every year (CDC, 2018).


Pathogen: Salmonella

Disease: Salmonellosis

Effective Water Purification Methods:

  • Specified Filters
  • Iodine Treatment
  • Solar Purification
  • Boiling
  • Distillation
  • Chlorination
  • Reverse Osmosis
  • Ultra-Violet Light

Discovered by American scientist, Dr. Salmon, salmonella is a bacterium that thrives in fecal matter and is transmitted through raw meat, raw eggs, fruits and vegetables, and contaminated water. Those at higher risk for infection are those who travel internationally, those who own birds or reptiles, and those with bowel disorders and weakened immune systems.

Drinking water becomes contaminated when wild animals defecate into streams and rivers

People who develop salmonellosis will show signs of diarrhea, chills, abdominal cramps, and fever. The fever can last up to seven days and with adequate hydration, most people can recover without medical intervention.

Every year, out of the 1.2 million people who get infected, 23,000 need hospitalization (CDC, 2018).


Pathogen: Salmonella Typhi

Disease: Typhoid Fever

Effective Water Purification Methods:

  • Specified Filters
  • Iodine Treatment
  • Solar Purification
  • Boiling
  • Distillation
  • Chlorination
  • Reverse Osmosis
  • Ultra-Violet Light

Salmonella Typhi is the bacteria that causes typhoid fever. Globally, it causes roughly 17 million infections and 200,000 deaths every year. A subspecies of the Salmonella bacterium, salmonella typhi can only affect humans and is more common in developing countries where hygiene is poor.

There are about 400 reported cases of Typhoid Fever in the United States every year, 75% of which are due to international travel.

Salmonella typhi grows in the intestines and blood and is transmitted through water or food contaminated with the feces of an infected person. A typical contamination process is when stool, buried in the soil, comes into contact with a close water source, usually a deep well. The water supply, when contaminated, can also contaminate the food. The bacteria can survive for many weeks in water or even in a dried sewage.

Symptoms can appear anywhere from 6 to 30 days after exposure and can include fever as high as 104 degrees Fahrenheit, abdominal pain, lethargy, diarrhea, severe headaches and poor appetite. If not treated immediately, typhoid fever can be fatal in up to 20% of infected people. When traveling to countries where typhoid is rampant, prior vaccination is highly recommended (CDC, 2018).


Pathogen: Vibrio Cholerae

Disease: Cholera

Effective Water Purification Methods:

  • Specified Filters
  • Iodine Treatment
  • Solar Purification
  • Boiling
  • Distillation
  • Chlorination
  • Reverse Osmosis
  • Ultra-Violet Light

Vibrio Cholerae is the bacteria responsible for cholera outbreaks. Cholera is a highly infectious disease that was prevalent in the 1800s when proper water treatment systems were not yet in place. Though rare in the United States today, cholera is still pervasive in developing countries with poor sewage systems.

Every year, around 150,000 cases of the disease is reported by the World Health Organization. With a 1% mortality rate, cholera treatment has gained significant headway as of recent years. However, if left untreated, the chances of dying increase to 60%.

Once infected, the common symptoms are diarrhea, dehydration, muscle cramps, rapid heart rate, low blood pressure, loss of skin elasticity, and excessive thirst. Without proper treatment death can occur within just a few hours (CDC, 2018).


Pathogen: Escherichia Coli

Disease: Verotoxic E. Coli

Effective Water Purification Methods:

  • Specified Filters
  • Iodine Treatment
  • Solar Purification
  • Boiling
  • Distillation
  • Chlorination
  • Reverse Osmosis
  • Ultra-Violet Light

Escherichia Coli, more commonly known as E. Coli, is a type of bacteria that lives in the intestines of humans and animals. Though most strains of e. coli are harmless, some can cause serious damage in the form of Verotoxic E. Coli, which infects around 100,000 people and kills 90 every year in the US.

Once infected, symptoms usually start within 3-4 days of exposure and can include abdominal pain, diarrhea, vomiting and fever. Those with healthy immune systems usually heal within 5 to 7 days. If left untreated, those with compromised immune systems can escalate into dehydration, intestinal infection, kidney failure and death.

The disease is usually transmitted through unsafe handling of food and through contaminated water. Poor sanitation can move the bacteria from humans or animals into the water stream (CDC, 2018).


Waterborne pathogens are everywhere but it is up to us to ensure we take the proper precautions to reduce the risk of exposure. Even though those in developed parts of the world have the privilege of modern infrastructure and sanitation systems, there can never be a 100% guarantee that all of the water we come into contact with will be pathogen free. One crack in a water pipe can put the entire water supply at risk of exposure.

When traveling, camping, or preparing for water storage at home, proper knowledge of the potential risks at hand is essential. When overseas, only drink water from trusted, properly sealed bottled sources. When unsure of the quality of a water source, always err on the side of caution and avoid it or apply the proper purification methods. Be aware and informed and keep yourselves and your family safe.

Thank you for taking the time to read our article on common waterborne diseases. We’d love to hear your feedback in the comments section below. If you’ve found this article to be useful and are interested in learning more, be sure to sign up for our newsletter.

OCTOBER 15, 2018


Berman, J. (2009, October 29). WHO: Waterborne Disease is World’s Leading Killer. Retrieved from

CDC. (2015, July 22). Giardia. Retrieved from

CDC. (2017, September 29). Hepatitis A Information. Retrieved from

CDC. (2017, January 12). Parasites – Cryptosporidium (also known as “Crypto”). Retrieved from

CDC. (2017, October 25). Campylobacter (Campylobacteriosis). Retrieved from

CDC. (2018, June 13). Norovirus. Retrieved from

CDC. (2018, April 30). Legionnaires Disease and Pontiac Fever. Retrieved from

CDC. (2018, January 17). Shigella – Shigellosis. Retrieved from

CDC. (2018, June 14). Salmonella. Retrieved from

CDC. (2018, June 28). Typhoid Fever. Retrieved from

CDC. (2018, May 3). Cholera – Vibrio cholerae infection. Retrieved from

CDC. (2018, April 20). E.coli (Escherichia coli). Retrieved from

Gut MicroBiota. (n.d.). Gut Microbiota Info – Gut Microbiota for Health. Retrieved from

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Diseases Caused By Food And Water Contamination

The primary necessity for survival is the availability of air. Once you have air to breathe, water, food, and shelter become the next requirements for your continued existence on the planet; that is, clean water and properly prepared food.

Even in normal times, there are many instances where an outbreak of infectious disease occurs due to water of poor quality. Ingesting food that was incompletely cooked caused the deaths of medieval kings in medieval times and may even have sparked the Ebola epidemic in 2014.

Epidemics caused by organisms that cause severe diarrhea and dehydration have been a part of the human experience since before recorded history. If severe enough, dehydration can cause hypovolemic shock, organ failure, and death. Indeed, during the Civil War, more deaths were attributed to dehydration from infectious diseases than from bullets or shrapnel.

Off the grid, water used for drinking or cooking can be contaminated by anything from floods to a dead opossum upstream from your camp. This can have dire implications for those living where there is no access to large amounts of IV hydration.

Therefore, it stands to reason that the preparation of food and the disinfection of drinking water should be under supervision. In survival, this responsibility should fall to the community medic; it is the medic that will (after the patient, of course) be most impacted by failure to maintain good sanitation.

Many diseases have disastrous intestinal consequences leading to dehydration. They include:

Cholera: Caused by the marine and freshwater bacterium Vibrio choleraCholera has been the cause of many deaths in both the distant and recent past. It may, once again, be an issue in the uncertain future.

Cholera toxins produce a rapid onset of diarrhea and vomiting within a few hours to 2 days of infection. Victims often complain of leg cramps. The body water loss with untreated cholera is associated with a 60% death rate. Aggressive efforts to rehydrate the patient, however, drops the death rate to only one per cent. Antibiotic therapy with doxycycline or tetracycline seems to shorten the duration of illness.

Typhus: A complex of diseases caused by bacteria in the Rickettsia family, Typhus is transmitted by fleas and ticks to humans in unsanitary surroundings, and is mentioned here due to its frequent confusion with “Typh-oid” fever, a disease caused by contaminated, undercooked food.

Although it rarely causes severe diarrhea, Typhus can cause significant dehydration due to high fevers and other flu-like symptoms. Five to nine days after infection, a rash begins on the torso and spreads to the extremities, sparing the face, palm, and soles. Doxycycline is the drug of choice for this disease.

Typhoid: Infection with the bacteria Salmonella typhi is called “Typh-oid fever”, because it is often confused with Typhus. Contamination with Salmonella in food occurs more often than with any other bacteria in the United States.

In Typhoid fever, there is a gradual onset of high fevers over the course of several days. Abdominal pain, intestinal hemorrhage, weakness, headaches, constipation, and bloody diarrhea may occur. A number of people develop a spotty, rose-colored rash. Ciprofloxacin is the antibiotic of choice but most victims improve with rehydration therapy.

Dysentery: An intestinal inflammation in the large intestine that presents with fever, abdominal pain, and severe bloody or watery mucus diarrhea. Symptoms usually begin one to three days after exposure. Dysentery, a major cause of death among Civil War soldiers, is a classic example of a disease that can be prevented with strict hand hygiene after bowel movements.

The most common form of dysentery in North America and Europe is caused by the bacteria Shigella and is called “bacillary dysentery”.  It is spread through contaminated food and water, and crowded unsanitary conditions. Ciprofloxacin and Sulfa drugs, in conjunction with oral rehydration, are effective therapies.

Another type is caused by an organism you may have read about in science class: the amoeba, a protozoan known as Entamoeba histolytica. Amoebic dysentery is more commonly seen in warmer climates. Metronidazole is the antibiotic of choice.

Traveler’s Diarrhea: An inflammation of the small intestine most commonly caused by the Bacterium Escherichia coli (E. coli). Most strains of this bacteria are normal inhabitants of the human intestinal tract, but one (E. coli O157:H7) produces a toxin (the “Shiga” toxin) that can cause severe “food poisoning”. The Shiga toxin has even been classified as a bioterror agent.

In this illness, sudden onset of watery diarrhea, often with blood, develops within one to three days of exposure accompanied by fever, gas, and abdominal cramping. Rapid rehydration and treatment with antibiotics such as Azithromycin and Ciprofloxacin is helpful. The CDC no longer recommends taking antibiotics in advance of a journey, but does suggest that Pepto-Bismol or Kaopectate (Bismuth Subsalicylate), two tablets four times a day, may decrease the likelihood of Traveler’s Diarrhea.

Campylobacter: The second most common cause of foodborne illness in the U.S. after Salmonella, this bacteria resides in the intestinal tract of chickens and causes sickness when meat is undercooked or improperly processed. It’s thought that a significant percentage of retail poultry products contain colonies of one variety, Campylobacter Jejuni. It is characterized as bloody diarrhea, fever, nausea, and cramping which begins two to five days after exposure. Although controversial, Erythromycin may decrease the duration of illness if taken early.

Trichinosis: Trichinosis is caused by the parasitic roundworm Trichinella in undercooked meat, mostly from domesticated pigs. Trichinosis causes diarrhea and other intestinal symptoms, usually starting one to two days after exposure. Fever, headache, itchiness, muscle pains, and swelling around the eyes occur up to 2 weeks later. Recovery is usually slow, even with treatment with the anti-helminthic (anti-worm) drugs Mebendazole and Albendazole (Albenza).

Giardiasis: The most common disease-causing parasite in the world is the protozoa Giardia lamblia. It has even been found in backcountry waters in many national parks in the U.S. Symptoms may present as early as one day after exposure, although it more commonly presents in one to two weeks. Patients complain of watery diarrhea, abdominal cramping, violent (often called “projectile”) vomiting, and gas. Metronidazole is the drug of choice in conjunction with oral rehydration.

There are many other pathogens that can cause life-threatening dehydration if untreated. Although we have mentioned common antibiotic treatments where applicable, most of the above will resolve on their own over time with strict attention to oral (or intravenous) rehydration. Many antibiotics (Cipro is an example) are associated with adverse effects that can be worse than the illness they’re designed to treat, so use judiciously.

It should be noted that some of these illnesses may be mimicked by viruses that are completely unaffected by antibiotics, such as Norovirus. Norovirus has been implicated in many of the outbreaks you read about on cruise ships.

Air, food, water, and shelter is necessary for survival. Bad air, food, water, and shelter leads to the next requirement, and that is medical supplies. Have a good medical kit and know how to use all its components. If you can accomplish this goal, you’ll be an effective medic if things go South.

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Living Outdoors Can and Will Hurt You.

Following some simple rules can save your life.

In an emergency survival situation the very first priority is clean drinking water. One can impractically, but survive for weeks without food, but 3 days in a warm climate is just about the human body’s limit without water. When collecting water in your environment always assume the water is NOT drinkable until either, boiled, filtered, or chemically treated. Here’s a small list of just some of the water borne diseases and pathogens you can contract by drinking untreated water. The best course of action is to  always choose caution and avoiding health concerns.   Avoid contracting the disease in the first place.

 Water Borne Diseases


Adenovirus Infection (Adenoviridae virus)

  • Vary depending on which part of the body is infected
  • Drinking contaminated water
  • Incubation 5-8 days


Amebiasis (Entamoeba histolytica parasite)

  • Diarrhea, stomach pain, and stomach cramping
  • Fecal matter of an infected person (usually ingested from a pool or an infected water supply)
  • Incubation 2 to 4 weeks


Campylobacteriosis (Campylobacter jejuni bacteria)

  • Diarrhea, stomach pain, and stomach cramping
  • Chicken, unpasteurized milk, water
  • Incubation 2 to 10 days

Cryptosporidiosis (Cryptosporidiumparasite)

  • Stomach cramps, dehydration, nausea, vomiting, fever, weight loss
  • Fecal matter of an infected person (can survive for days in chlorinated pools)
  • Incubation 2 to 10 days

Cholera (Vibrio choleraebacteria)

  • Watery diarrhea, vomiting, and leg cramps
  • Contaminated drinking water, rivers and coastal waters
  • Incubation 2 hours to 5 days

E. Coli 0157:H7 (Escherichia colibacteria)

  • Diarrhea (may be bloody), abdominal pain, nausea, vomiting, fever, HUS
  • Undercooked ground beef, imported cheeses, unpasteurized milk or juice, cider, alfalfa sprouts
  • Incubation 1 to 8 days

Giardiasis (Giardia lambliaparasite)

  • Diarrhea, excess gas, stomach or abdominal cramps, and upset stomach or nausea
  • Swallowing recreational water contaminated with Giardia
  • Incubation 1 to 2 weeks

Hepatitis A (Hepatitis A virus)

  • Fever, fatigue, stomach pain, nausea, dark urine, jaundice
  • Ready-to-eat foods, fruit and juice, milk products, shellfish, salads, vegetables, sandwiches, water
  • Incubation 28 days

Legionellosis (Legionella pneumophilabacteria)

  • Fever, chills, pneumonia, anorexia, muscle aches, diarrhea and vomiting
  • Contaminated water
  • Incubation 2-10 days

Salmonellosis (Salmonellabacteria)

  • Abdominal pain, headache, fever, nausea, diarrhea, chills, cramps
  • Poultry, eggs, meat, meat products, milk, smoked fish, protein foods, juice
  • Incubation 1-3 days

Vibrio Infection (Vibrio parahaemolyticus,Vibrio vulnificusbacteria)

  • Nausea, vomiting, headache (a quarter of patients experience dysentery-like symptoms)
  • Raw shellfish, oysters
  • Incubation 1 to 7+ days

Viral Gastroenteritis (Calicivirus virus)

  • Diarrhea, vomiting, nausea, cramps, headache, muscle aches, tiredness, slight fever
  • Water, ready-to-eat foods (salad, sandwiches, bread) shellfish
  • Incubation 24 to 48 hours

If you don’t want any of these diseases it’s best that you plan for emergencies by having a way to either sterilized or filter your water sources. Boiling water, using a filtering system that removes particles down to .5 microns, or chemically treating water with 3-4 drops of bleach per gallon of water will provide protection. Obviously none of these processes will allow you to drink salt water. The only way to process and sterilize salt water is to distill it. This process through boiling and condensing will both kill any pathogens and remove minerals.

Ok we’ve got water now.

What else can make you sick? Well the answer is more annoying and dangerous than any lion, tiger, or bear. They outnumber us billions to one and they are relentless….Insects

From the annoying buzzing of mosquitoes to the sting of the creepy scorpion. Through out history, insects have been responsible for the collapse of entire societies.

Protections from insects can include a number of solutions.

  • Long sleeve clothing
  • Long pants
  • Hats and Head Nets
  • Netting covering opening in shelters
  • Chemical Sprays (Deet, Paricardin, Eucalyptus, Gamma CyhalothrinSprays)
  • Fire

If you are bitten or stung by any insect. To reduce the possibility of allergic reaction one should either take an antihistamine such as Benadryl or some other brand. If you know you have a severe reaction to stings such as bees or wasps an epipen is definitely something you’re going to want to pack in you bug out.


Yersinia pestis:plague


Lice Infestation


  • Arboviral Encephalitides
  • Mosquito-transmitted viral diseases causing brain inflammation/encephalitis
  • Eastern equine encephalitis
  • Japanese encephalitis
  • La Crosse encephalitis
  • St. Louis encephalitis
  • West Nile virus
  • Western equine encephalitis
  • dengue fever
  • malaria
  • Rift Valley fever
  • West Nile encephalitis (West Nile virus infection)
  • yellow fever


  • babesiosis
  • Crimean-Congo hemorrhagic fever
  • ehrlichiosis
  • Lyme disease
  • Rocky Mountain spotted fever
  • Southern tick-associated rash illness
  • tick-borne relapsing fever
  • tularemia


Stings result in numbness or tingling, blurry vision and twitching muscles. For children, hyperactivity and erratic eye movement can manifest.

Spider Bites

Mild stinging, followed by local redness and severe pain that usually develops within eight hours. Necrosis of tissue is common among some species and poisonous spiders. Some spiders such as the Brown Recluse and Black Widow are poisonous and can result in severe illness and/or death. Anti-Venom treatments in some cases may be the only way to survive.

Bee and Wasp Stings

Sharp pain or burning at the sting site. Redness, minor swelling, and itching. Those with severe allergic reactions need medical attention immediately or self-administered epipen treatment (strong antihistamine)


Sharp pain or burning at the sting site. Redness, minor swelling, and itching. Those with severe allergic reactions need medical attention immediately or strong antihistamine treatments.

Wild Animals, especially the Human kind can harm you and your family

It’s an unfortunate reality that in emergency and survival situations we are sometimes forcibly placed in predicaments that we would have never imagined. Animals have innate instinct to survive by hunting for food. If you are prepared for an emergency and have food, animals will try to take it from you.


  • They will eat your unprotected food.
  • Do not climb a tree to get away, they are excellent climbers.
  • Pepper Spray or Firearm can/will deter them.
  • Be loud.
  • Do not run away. They will consider you prey.
  • Bears are good to eat.

Mountain Lion

  • They will lay in wait for hours.
  • Make a lot of noise.
  • Firearm can/will deter them.
  • Do not run away. They will consider you prey.
  • Can be eaten for emergency food


  • They will steal your food
  • Can’t harm you.
  • Lock down or hang food stores
  • Be loud
  • Can be eaten


  • Do not camp right on water sources they frequent
  • Be aware of surrounding
  • If chased, run at 45 degree angle from them.
  • Excellent food source.

Poisonous Snakes

  • Wear long pants and boots if you walking through tall grass.
  • Be aware of your surroundings
  • Crawling around larger rocks and or logs may upset snakes
  • If bitten:
  • Stay calm. Apply a compression wrap to area.
  • Do not try to suck out venom. This does absolutely nothing. You may end up causing more necrosis of the tissue and at best you’ll remove 1/1000th of the venom injected.
  • Receiving professional medical attention and the proper anti-venom is the best option.
  • If no medical support is available, there really isn’t anything to do but wait. Healthy and strong individuals have a much better chance of survival.
  • Can be eaten


  • The most dangerous of all animals
  • They will eat your food
  • They will steal everything valuable
  • They will hunt you
  • They will kill you and your family (or worse)
  • In Survival situation trust no one other than family and people you know well.
  • Protect yourself with firearms, pepper spray, knives.
  • Be prepared to pack up and run. (avoidance is the safest option)

When SHTF be Prepared to GO

Be Prepared, Plan for Emergencies, Protect your Loved Ones.

Download a free Emergency Check List [Download]