1. Name potential viral diseases that this patient might have considering the history that is given.
Some possible diseases that this person may have acquired are Hepatitis A or B, or Yellow Fever.
2. What most likely is the disease the patient has? Why would you make that conclusion?
I believe that the disease is Hepatitis A because it can be contracted through contaminated food or water. It is a viral infection of the liver causing nausea, vomiting, diarrhea, fever and jaundice. It is caused by the hepatitis A virus, a small, single stranded RNA virus of the picornavirus family. Hepatitis B is more transmitted through bodily fluids and sexual contact, just like HIV. Yellow fever has the same symptoms but is spread through a female infected mosquito in tropical areas. “Recent studies have shown that many cases of travel-related hepatitis A occur in travelers with "standard" tourist itineraries, accommodations, and food and beverage consumption behaviors.” (2) This leads me to believe that Hepatitis A is the disease.
3. Identify the possible transmission route for this virus.
“Hepatitis A virus spreads by fecal-oral route mostly through fecal contamination of hands, food, or water.”(4) Since this patient lived like the locals by eating their food and drinking their water it is most likely he got the virus from consuming local food and tap water. Symptoms usually show up 2-6 weeks after exposure to the virus. The incubation period for Hepatitis A averages about 28 days.
4. What serological tests could be done to pinpoint the illness?
There are several tests that can be done to pinpoint Hepatitis A. First a blood test will be done to see how well the liver is functioning. Following a “demonstration of IgM antibodies against hepatitis A virus (IgM anti-HAV) in the serum of acutely or recently ill patients establishes the diagnosis.