Our results indicate that circovirus, alone or in co-infection with other pathogens, might contribute to illness and death in dogs.
Not all infected dogs died, and the virus has been seen in dogs that appear healthy, indicating that some dogs may have an immunity to the virus.
Viruses and bacteria that commonly infect just one animal species can evolve and “jump” from that species to another; this process is known as zoonosis.
Medical experts believe that influenza, HIV, Ebola and dozens of other zoonotic diseases once only infected pigs, apes or other animals, but these viruses are now common among humans. Bats, in particular, are known as carriers of viral infections.
Recent research suggests bats are reservoirs for more than 60 viruses that can also infect humans, and host more viruses per species than even rodents do.