H1N1 strains collected in 1957 and 1977 were nearly identical
H1N1 strains collected in 1957 and 1977 were nearly identical, both antigenically and genetically.
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Controlling Infectious Diseases »Controlling Infectious Diseases
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Diseases »Diseases
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Influenza »Influenza
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Background about Flu »Background about Flu
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Natural history of infection of influenza »Natural history of infection of influenza
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Recovery from Flu? »Recovery from Flu?
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Retain lifelong immunity to closely-related strains »Retain lifelong immunity to closely-related strains
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Re-emergence of H1N1 in 1977 »Re-emergence of H1N1 in 1977
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H1N1 strains collected in 1957 and 1977 were nearly identical
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