From wiki:
Major modern diseases such as
Ebola virus disease and
salmonellosis are zoonoses. HIV was a zoonotic disease transmitted to humans in the early part of the 20th century, though it has now mutated to a separate human-only disease. Most strains of
influenza that infect humans are human diseases, although many strains of
bird flu and
swine flu are zoonoses; these viruses occasionally recombine with human strains of the flu and can cause pandemics such as the
1918 Spanish flu or the
2009 swine flu.
[4] Taenia solium infection is one of the neglected tropical diseases with public health and veterinary concern in endemic regions.
[5] Zoonoses can be caused by a range of disease pathogens such as
emergent viruses, bacteria, fungi and parasites; of 1,415 pathogens known to infect humans, 61% were zoonotic.
[6] Most human diseases originated animals; however, only diseases that routinely involve non-human to human transmission, such as
rabies, are considered direct zoonosis.
[7]Zoonoses have different modes of transmission. In direct zoonosis the disease is directly transmitted from animals to humans through media such as air (
influenza) or through bites and saliva (
rabies).
[8] In contrast, transmission can also occur via an intermediate species (referred to as a
vector), which carry the disease pathogen without getting sick. When humans infect animals, it is called reverse zoonosis or
anthroponosis.
[9] The term is from
Greek: ζῷον zoon "animal" and νόσος nosos "sickness".
