Novel influenza is similar to avian influenza. It is any influenza virus that is newly circulating in our animal species. Similar to influenza A viruses in birds, there are influenza A viruses specific to animals. Some flu viruses specific to animals include: swine influenza virus in pigs, equine influenza virus in horses, and canine influenza in dogs.
These viruses usually spread between animals of the same species. Transmission between animal species can occur, but it is rare. These illnesses can spread by direct contact or when droplets of an infected animal's cough or sneeze spread through the air and make contact with other nearby animals.
Swine, equine, and canine influenza viruses rarely pass to people. Transmission of novel influenza viruses from animals to humans usually occurs when droplets from an infected animal's cough or sneeze spread through the air and make contact with people near the ill animal.