Rotavirus is a common cause of diarrhoeal disease among infants and young children.[Nearly every child in the world is infected with this virus at least once by the age of five, developing immunity with each infection, so subsequent ones are less severe. Although rotavirus was discovered in 1973, its importance has historically been underestimated within the public health community. It also infects animals, and is a pathogen of livestock.
This influenza is an infection caused by any one of several types of swine influenza viruses. It was initially seen in humans in Mexico in 2009. Transmission of the virus from pigs to humans is rare and doesn’t always lead to human flu, but people with regular exposure to pigs are at increased risk an infection.