SEPTEMBER 14, 2016
Diarrhea kills. Until very rmilecently, disease claimed more lives in war than bullets, bombs, bayonets, or bludgeoning, and it remains a chief concern of militaries. Today, troops are vaccinated against a gamut of biological threats like tetanus, typhoid fever, measles, smallpox, and anthrax. However, vaccines and the U.S. military go way back: George Washington’s decision to inoculate his troops against smallpox while they rode out the winter of 1777 to 1778 at Valley Forge slashed the smallpox death rate from four in 10 to one in 50. An 18th century smallpox inoculation was a far cry from the tidy regime of shots available today. Back then, a doctor would scratch pus from a donor with smallpox into the skin, offering the immune system enough Variola virus to train its defenses without killing the subject. Usually. Naturally occurring smallpox has since been eradicated, but a vaccine regimen against natural threats and biological weapons remains key to the military’s effort to guard its greatest asset: the health of its people.
Take diarrhea, a condition for which there is no vaccine. Nearly a hundred thousand soldiers died from diarrhea or dysentery over the course of the American Civil War. Soldiers in Vietnam were admitted to the hospital with diarrhea four times more often than malaria. Safe drinking water and food sanitation practices have come a long way, but diarrhea remains a burden on the modern soldier. These days, it tends to strike many eating and drinking on the local economy, where sanitation standards could be nonexistent. Diarrhea, often the result of cellular destruction wreaked by infections like shigella or E. coli, can cause victims to lose fluids much faster than they can replace them. For a deployed soldier, the best course of action is an antibiotic strike against the offending microorganisms before dehydration sets in, but misinformation abounds: Those stricken often believe it is best to just let diarrhea run its course. In fact, letting the digestive tract flush itself out usually means losing fluids but retaining the problematic bacteria. The military is wary of anything that can put a soldier out of commission for days at a time. Thus, military doctors conduct clinical studies and information campaigns on, yes, diarrhea. It is one of many ongoing struggles to keep American service members in fighting shape.
