In which of the following, virus is shed in stool?
Herpangina:
Respiratory viral shedding can persist for up to 3 weeks and in the stool for up to 8 weeks. Patients are most contagious at this stage.
Influenza:
People with flu can spread it to others up to about 6 feet away. Most experts think that flu viruses spread mainly by droplets made when people with flu cough, sneeze or talk. 
Varicella (Chickenpox):
Chickenpox is transmitted from person to person by directly touching the blisters, saliva or mucus of an infected person.
Smallpox: 
They spread the virus when they coughed or sneezed and droplets from their nose or mouth spread to other people. They remained contagious until their last smallpox scab fell off.
Herpangina
Influenza
Varicella
Smallpox