[Influenza activity in China from 2000 to 2001].

Abstract

OBJECTIVE To understand the epidemics and antigenic drift of influenza viruses in China from 2000 to 2001. METHODS The viruses were grown in embryonated hen eggs with 9 - 10 days old. The egg allantoic fluids with influenza viruses were used. Virion RNA was transcribed into cDNA by reverse transcriptase while cDNA amplified by PCR. Products of PCR were… (More)

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