You would be surprised at how many people get sick on the Appalachian Trail due to the spreading of germs. In fact, Appalachian Trail hikers had a 45 percent diarrhea rate, implying that poor hygiene is a major contributing factor. How to prevent getting sick is to make sure your First Aid Kit has the some basic medications and ALCOHOL WIPES to keep your hands clean.
Ariane has gotten the Flu while backpacking and she explains how hard it is to hike out when you get sick. Some basic medications, like benadryl, tylenol, Mucinex, and Diarrhea tablets can help you when you feel like you maybe getting sick on the Trail.
In a article written by Blissful Hiking:
The chief complaint on the Appalachian Trail is the Norovirus, which seems to strike every hiking season. Noroviruses are found in the stool or vomit of infected people and on infected surfaces that have been touched by ill people. Outbreaks occur more often where there are more people in a small area like hostels, shelters and privies contaminated by sick hikers.
The best way to prevent getting sick is to make sure your hands are always clean. Bear cables are filled with germs, wipe your hands off after using them. Prevention is the key. Make sure you keep clear of sharing food or area’s where you see other hikers being sick. Again, using alcohol type hand sanitizer and trying not to share food, it going to go a long way.
If you do get sick on the trail, you are going to have to REST. Drink plenty of fluids and replenish your electrolytes. Chicken Soup and Lemon Tea is a great way to start your rebound. But rest and a day off is probably going to get you back on the trail.