Adenovirus type 2 is a virus that causes respiratory disease that can lead to pneumonia and death. In canines, it is similar to the canine hepatitis virus, adenovirus type 1, and occurs in vaccines that protect canines against infectious hepatitis, according the Merck Animal Health.
Canine adenovirus type 2 has associations with kennel cough, clinically known as infectious tracheobronchitis. It is extremely contagious and spreads to other dogs in close proximity. Symptoms of infection of this virus include a dry, hacking cough; conjunctivitis; fever; and retching. While these viral infections are usually self-resolving, it can lead to pneumonia in some cases, reports Vet Street. In humans, adenovirus type 2 usually affects children and causes acute upper respiratory infections with a runny nose and fever, explains Medical Dictionary.