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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.

Original on the https://www.doomandbloom.net site.

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12 OUTDOOR SURVIVAL SKILLS EVERY PERSON SHOULD MASTER

Think fast: You’re stranded in the woods with darkness falling and no help in sight. Can you to get safety before the elements (or wild animals) get to you?

 

Survival Skill #1
Locating a Suitable Campsite
“You want to stay high and dry,” Stewart says. Avoid valleys and paths where water may flow toward you (flash floods get their name for a reason—they can deluge a low-lying area in minutes). Choose a campsite free from natural dangers like insect nests and widow-makers—dead branches that may crash down in the middle of the night—as well as falling rocks. Ideally, you want to be close to resources like running water, dry wood (from which you can assemble your shelter and build a fire) and rocky walls or formations that can shield you from the elements.

 

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Survival Skill #2
Building a Shelter
Not surprisingly, hypothermia is the number one outdoor killer in cold weather. That means a well-insulated shelter should be your top priority in a prolonged survival situation. To make a simple lean-to, find a downed tree resting at an angle, or set a large branch securely against a standing tree, and stack smaller branches close together on one side. Layer debris, like leaves and moss, across the angled wall. Lastly, insulate yourself from the cold ground–which will draw heat from your warm body–by layering four to six inches of debris to lie on.

Survival Skill #3
Starting a Fire With a Battery
Any battery will do, says Stewart. “It’s about short-circuiting the battery.” Connect the negative and positive terminals with a wire, foil (like a gum wrapper), or steel wool to create a spark to drive onto your tinder bundle. Have your firewood ready.
Survival Skill #4
Building Your Fire
Stewart views fire building in terms of four key ingredients: tinder bundle of dry, fibrous material (cotton balls covered in Vaseline or lip balm are an excellent choice, if you’ve got them) and wood in three sizes—toothpick, Q-tip, and pencil. Use a forearm-sized log as a base and windscreen for your tinder. When the tinder is lit, stack the smaller kindling against the larger log, like a lean-to, to allow oxygen to pass through and feed the flames. Add larger kindling as the flame grows, until the fire is hot enough for bigger logs. Check out some of our fire starters.

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Survival Skill #5
Finding clean water
“You’ll come across two kinds of water in the wild,” Stewart says. “Potable water that’s already purified, and water that can kill you.” When it comes to questionable water—essentially anything that’s been on the ground long-term, like puddles and streams—your best option is boiling water, which is 100 percent effective in killing pathogens. But sometimes boiling isn’t an option.

Rain, snow, and dew are reliable sources of clean water you can collect with surprising ease, and they don’t need to be purified. With a couple of bandannas, Stewart has collected two gallons of water in an hour by soaking up dew and ringing out the bandannas. You can also squeeze water from vines, thistles, and certain cacti. Are there any maple trees around? Cut a hole in the bark and let the watery syrup flow—nature’s energy drink.

Survival Skill #6
Collecting Water With a Transpiration Bag
Like humans, plants “sweat” throughout the day—it’s a process called transpiration. To take advantage of this clean, pure source of water, put a clear plastic bag over a leafy branch and tie it tightly closed. When you return later in the day, water will have condensed on the inside of the bag, ready to drink. Check out some of our products for collecting water.

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Survival Skill #7
Identifying Edible Plants
There’s no need to go after big game in a survival situation, and chances are you’ll waste energy in a fruitless attempt to bring them down. “Make your living on the smalls,” Stewart says. That means eating edible plants (as well as small critters like fish, frogs, and lizards).Separating the plants you can eat from those that will kill you is a matter of study and memorization. Buy a book to familiarize yourself with plants in different environments. And don’t take any chances if you’re uncertain (remember how Chris McCandles died in the end of Into the Wild). A few common edible plants include cattail, lambsquarter (also called wild spinach), and dandelions. Find these and eat up.

Survival Skill #8
Using a Split-tip Gig to Catch Critters
Gigging (hunting with a multi-pronged spear) is the simplest way to catch anything from snakes to fish. Cut down a sapling of about an inch in diameter, and then split the fat end with a knife (or sharp rock) into four equal sections ten inches down. Push a stick between the tines to spread them apart, then sharpen the points. You’ve got an easy-to-use four-pronged spear. Much easier for catching critters than a single sharp point.

Survival Skill #9
Navigating By Day
If you ever find yourself without a GPS tool (or a simple map and compass) you can still use the sky to find your way. The most obvious method to get a general bearing by day is to look at the sun, which rises approximately in the east and sets approximately in the west anywhere in the world. But you can also use an analog watch to find the north-south line. Just hold the watch horizontally and point the hour hand at the sun. Imagine a line running exactly midway between the hour hand and 12 o’clock. This is the north-south line. On daylight savings? Draw the line between the hour hand and one o’clock.

Survival Skill #10
Navigating By Night
Find Polaris, or the North Star, which is the end of the Little Dipper’s handle. If you can find the Big Dipper, draw a line between the two stars at the outer edge of the constellation’s dipper portion. Extend this line toward the Little Dipper, and it will line up with Polaris. Face Polaris, and you’re facing true north. If there is a crescent moon in the sky, connect the horns of the crescent with an imaginary line. Extend this line to the horizon to indicate a southerly bearing. Once you determine your direction, pick a landmark nearby or in the distance to follow by daylight.

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Survival Skill #11
Tying a Bowline
Knots come in handy for a slew of survival scenarios—tying snares, securing shelters, lowering equipment or yourself down a cliff face. Ideally, you should have an arsenal of knots, from hitches to bends to loops, in your repertoire. But if you learn only one, learn the bowline.

“It’s your number one, go-to rescue knot,” Stewart, who uses a mnemonic for every knot, says. It’s foolproof for fastening rope to an object via a loop, particularly when the rope will be loaded with weight: the harder you pull, the tighter the knot gets. Stewart’s mnemonic for tying the bowline from any angle is “the rabbit comes out of the hole, around the tree, and back in the hole.” Use this mnemonic, says Stewart, and “it doesn’t matter if you tie it spinning on your head. It’s going to come out right.”

Survival Skill #12
Sending Up a Survival Signal
At times—like when you have a debilitating injury—your only hope for getting saved is to maximize your visibility so rescuers can find you. Two methods, if used properly, will guarantee that, if someone’s looking, they’ll see you.The first is a signal fire—and the first rule is to put it out in the open for visibility. That means hilltops or clearings in a forest where nothing, like a cliff face or trees, will disperse the smoke. Create a platform to raise the base of the fire off the ground so moisture doesn’t saturate the wood. Save your absolute best combustible material for your signal fire to guarantee a quick light. Once the fire is lit, pile on green branches, like pine boughs in winter, to produce thick smoke. “It’s not about warmth, it’s about 15 seconds of smoke,” Stewart notes. “That’s about all you’ve got when you hear a plane before it’s out of sight.”

The second is a mirror signal. A flash from signal mirror—even at night, by moonlight—can be seen for miles, much farther than any flashlight. You don’t need a store-bought signal mirror to be effective. Improvise with any reflective surface you’ve got, from rearview mirrors or headlights to a cell phone screen. Aiming the reflection is the key, and it’s simple. Hold out a peace sign and place your target–be it plane or boat–between your fingers. Then flash the reflection back and forth across your fingers.