Which viral disease is transmitted by orofecal route?
**Core Concept**
The orofecal route of transmission involves the ingestion of fecally contaminated food or water, leading to the spread of certain viral diseases. This route is a common mode of transmission for various pathogens, including rotaviruses, noroviruses, and adenoviruses.
**Why the Correct Answer is Right**
The correct answer is Hepatitis A, a viral disease caused by the hepatitis A virus (HAV). Hepatitis A is primarily transmitted through the orofecal route, where fecally contaminated food or water is ingested by an individual. This leads to the replication of the virus in the liver, causing inflammation and subsequent liver damage. The orofecal route of transmission is a key factor in the spread of Hepatitis A, particularly in areas with poor sanitation and hygiene.
**Why Each Wrong Option is Incorrect**
* **Option A:** Hepatitis B is primarily transmitted through parenteral routes, such as blood transfusions, needle sharing, and perinatal transmission.
* **Option B:** Hepatitis C is also transmitted through parenteral routes, including blood transfusions and needle sharing.
* **Option D:** Hepatitis E is transmitted primarily through the fecal-oral route, but it is more commonly associated with contaminated water and food, rather than orofecal transmission.
**Clinical Pearl / High-Yield Fact**
Hepatitis A is a vaccine-preventable disease, and vaccination is recommended for individuals traveling to areas with high prevalence of Hepatitis A, as well as for individuals at high risk of exposure, such as healthcare workers and individuals with certain underlying medical conditions.
**Correct Answer: C. Hepatitis A. Hepatitis A virus (HAV) is transmitted through the orofecal route.**