Volume 28, Supplement—December 2022
SUPPLEMENT ISSUE
Surveillance
Lessons Learned from CDC’s Global COVID-19 Early Warning and Response Surveillance System
Figure 3
![Cumulative confirmed COVID-19 cases reported outside of mainland China and the United States by CDC EWARS and other surveillance systems during epidemiologic weeks 3–9, January 20–March 7, 2020. CDC EWARS, US Centers for Disease Control and Prevention global COVID-19 Early Warning and Response Surveillance system; ECDC, European Centers for Disease Control; EW, epidemiologic week; JHU, Johns Hopkins University Center for Systems Science and Engineering; WHO, World Health Organization.](/eid/images/21-2544-F3.jpg)
Figure 3. Cumulative confirmed COVID-19 cases reported outside of mainland China and the United States by CDC EWARS and other surveillance systems during epidemiologic weeks 3–9, January 20–March 7, 2020. CDC EWARS, US Centers for Disease Control and Prevention global COVID-19 Early Warning and Response Surveillance system; ECDC, European Centers for Disease Control; EW, epidemiologic week; JHU, Johns Hopkins University Center for Systems Science and Engineering; WHO, World Health Organization.
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