Animals Involved
Dogs, cats, bats, cattle, sheep, horses, many other domestic and wild mammals, birds
Known Distributions
Worldwide; clinical cases often cluster in regional foci
Probable Means of Spreading
Principally environmental exposure, avian or bat feces encourage growth of organism; infection common in people and animals; insignificant as zoonosis
Clinical Manifestations in People
Flulike, febrile illness, usually self-limiting in healthy hosts; skin lesions; chronic pulmonary disease, usually with preexisting lung disease; dissemination in very young, elderly, immunocompromised