Volume 9, Number 3, March 2003

Influenza AH1N2 Viruses, United Kingdom, 2001–02 Influenza Season

Joanna S. Ellis,* Adriana Alvarez-Aguero,† Vicky Gregory,† Yi Pu Lin,† A. Hay,† and Maria C. Zambon*
*Central Public Health Laboratory, London, United Kingdom; and †National Institute for Medical Research, London, United Kingdom

Figure 2. Age distribution of patients from whom influenza A viruses were isolated during 2001–02 in the U.K.

H1N1 isolates

H1N2 isolates

H3N2 isolates

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This page last reviewed March 18, 2003

Emerging Infectious Diseases Journal
National Center for Infectious Diseases
Centers for Disease Control and Prevention