Do people who engage in DATO and ATM  ever worried about norovirus which is in fecal matter?

From Wikipedia  
Norovirus is also known as the winter vomiting bug. It is the commonest cause of gastroenteritis, which is the inflammation of the gastrointestinal tract and includes symptoms such as diarrhea, vomiting, abdominal pain, fever, and dehydration. The virus is usually transmitted via the fecal-oral route, when pathogens in fecal particles from one individual are passed on to the mouth of another individual.