According to the CDC article on noroviruses, food can be contaminated by all except _____.

The correct answer is b. It is indirect; hence, if it doesn’t make contact, it cannot contaminate.

The response is: B. Indirect contact with animal feces. Norovirus, characterized as a small, round virus with high infection rates and durability, can linger on surfaces that an infected person has touched, promoting the spread to others. This virus is often found in contaminated food and water and contributes significantly to viral gastroenteritis in adults, unlike rotavirus, which more commonly affects children. Symptoms of norovirus infection include severe diarrhea, followed by vomiting and often fever. Treatment generally involves rest and staying hydrated due to the virus's high mutational rate, meaning there are many norovirus types, making it challenging to control. Indirect contact with animal feces does not lead to norovirus contamination of food; however, direct contact with contaminated hands, surfaces, or airborne droplets from an infected individual's vomit can result in contamination.