H1N1_illness_onset_dates_-_United_States.svg

Description

English: Graph showing confirmed human cases of swine-origin influenza A (H1N1) infection with known dates of illness onset --- United States, April 27, 2009. Onset dates were available for 25 of the 64 confirmed cases.

Date

30 August 2009

Source

Own work. Data from Update: Infections With a Swine-Origin Influenza A (H1N1) Virus --- United States and Other Countries (Centers for Disease Control and Prevention, April 28, 2009, PD-USGov).

Author

Cflm001 ( talk )

Permission
( Reusing this file )

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