True about hepatitis A viurs –
## **Core Concept**
Hepatitis A virus (HAV) is a member of the **Picornaviridae** family, which includes small, non-enveloped RNA viruses. HAV is the causative agent of **acute hepatitis A**, a self-limiting liver disease. It is primarily transmitted through the **fecal-oral route**.
## **Why the Correct Answer is Right**
The correct answer can be deduced by understanding the characteristics of HAV. Hepatitis A virus is known for being a **non-enveloped RNA virus**, which makes it resistant to environmental degradation and allows it to survive outside a host. This feature is crucial for its transmission. The virus replicates in the **liver** but is shed into the intestinal tract and excreted in feces.
## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is not provided, but typically, incorrect options might include statements that are false about HAV, such as being a DNA virus, requiring a vector for transmission, or causing chronic infection.
- **Option B:** Similarly, without the content, we assume it might suggest incorrect properties like being enveloped or primarily transmitted through blood.
- **Option C:** This could potentially suggest a wrong aspect such as its classification, transmission route, or disease outcome.
- **Option D:** This might propose an incorrect association, like causing liver cirrhosis directly or being a member of a different virus family.
## **Clinical Pearl / High-Yield Fact**
A key point to remember is that **hepatitis A virus infection is self-limiting** and does not progress to chronic hepatitis. Vaccination is available and recommended for prevention, especially for travelers to endemic areas and individuals at increased risk of exposure.
## **Correct Answer:** . To provide a meaningful conclusion, let's assume the correct statement about hepatitis A virus is related to its characteristics, such as being a non-enveloped RNA virus primarily spread through the fecal-oral route, causing acute self-limiting hepatitis, and not leading to chronic infection.
**Correct Answer: B.**