Serotype of Adeno virus causing gastroenteritis is
**Core Concept**
Adenovirus is a common cause of viral gastroenteritis, with multiple serotypes contributing to human disease. These serotypes can be divided into subgroups based on their ability to cause different symptoms, including gastroenteritis.
**Why the Correct Answer is Right**
The correct answer is Adenovirus 40 (Ad40) and Adenovirus 41 (Ad41), which are the primary serotypes responsible for causing gastroenteritis in humans. These serotypes attach to the enterocytes in the small intestine, leading to cell death and disruption of the intestinal epithelial barrier. The pathogenesis of Ad40 and Ad41 involves the adherence of the virus to the intestinal mucosa, followed by the replication of the virus and the induction of an inflammatory response.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because Adenovirus 5 (Ad5) is a common cause of respiratory infections, including the common cold and pneumonia, but it is not typically associated with gastroenteritis.
**Option B:** This option is incorrect because Adenovirus 37 (Ad37) is a cause of epidemic keratoconjunctivitis, a highly contagious eye infection, but it is not commonly associated with gastroenteritis.
**Option C:** This option is incorrect because Adenovirus 4 (Ad4) is a cause of respiratory infections, including the common cold and pneumonia, but it is not typically associated with gastroenteritis.
**Clinical Pearl / High-Yield Fact**
It's worth noting that Adenovirus 40 and Adenovirus 41 are the primary serotypes responsible for causing gastroenteritis in children, particularly in developing countries where access to clean water and sanitation may be limited.
**Correct Answer: C. Adenovirus 4**