Emerging Infectious Disease ISSN: 1080-6059
Volume 15, Number 10—October 2009
Research
Review of an Influenza Surveillance System, Beijing, People’s Republic of China
Figure 2

Figure 2. Weekly influenza-like illness (ILI) counts during the 2007–08 influenza season, Beijing, People’s Republic of China.
Lessons from the History of Quarantine, from Plague to Influenza A
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