Related terms:
ha
strain
human flu
poultry
subtypes
viruses
endemic
swine flu
pandemic
flu viruses
influenza
sialic acid
spanish flu
hemagglutinin
human influenza
influenzavirus
avian influenza
influenza a virus
influenza viruses
currently circulating
both human and pig populations
currently endemic in both human
Wikipedia sources:
Human flu
Influenza A virus
2009 flu pandemic in Europe
Context for words:
fully
recovered
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