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Volume 28, Supplement—December 2022
Lessons Learned from CDC’s Global COVID-19 Early Warning and Response Surveillance System
|Indicator||Epidemiologic week; beginning date
|3; Jan 25||4; Feb 1||5; Feb 8||6; Feb 15||7; Feb 22||8; Feb 29||9; Mar 7|
|No. team members||1||4||5||6||7||7||7||9†|
|Average no. hours worked/d‡||10.0||10.2||9.2||7.6||6.7||6.8||7.0||8.2|
|Cumulative no. reporting countries||13||25||28||29||32||63||103||–|
|No. new cases||38||135||186||331||1,037||5,238||17,346||24,311|
*Data are based on a 7-day work week. CDC, US Centers for Disease Control and Prevention; EWARS, early warning and response surveillance; –, not applicable. †The team comprised 9 different persons during study period. ‡Accounts for the average no. hours each person worked per day during the week.