Influenza A (H1N1) virus, 2009--online monitoring.
Brownstein
John S
JS
Children's Hospital Informatics Program, Children's Hospital Boston, and Harvard Medical School, Boston, USA.
Freifeld
Clark C
CC
Madoff
Lawrence C
LC
D002489:Central America / Q000453:epidemiology; D004196:Disease Outbreaks; D014943:Global Health; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype; D007251:Influenza, Human / Q000453:epidemiology* / Q000635:transmission; D016247:Information Storage and Retrieval; D020407:Internet; D008800:Mexico / Q000453:epidemiology; D011159:Population Surveillance / Q000379:methods*; D014481:United States / Q000453:epidemiology