Newcastle Disease

Viral Diseases

Animals Involved

Domestic and wild birds

Known Distributions

Mildly virulent (lentogenic, mesogenic strains) are found worldwide; highly virulent (velogenic)
strains found in Asia, the Middle East, Africa, Central and South America, parts of Mexico; also in cormorants in USA

Probable Means of Spreading

Occupational exposure, usually after contact with large amounts of virus

Clinical Manifestations in People

Highly virulent (velogenic) strains can cause self­limiting conjunctivitis, possibly other syndromes

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