English

Influenza nomenclature

Noun

H5N1 ‎(uncountable)

1. (medicine) A strain of avian influenza, often lethal in humans but not transmissible between humans.

Related terms

• H1N1

Quotations

2005: At present, H5N1 flu strain poses only a limited threat to humans as it cannot spread easily between people. — Case of Bird Flu Drug Resistance, BBC Online.