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Table 1 Number of COVID-19 imported cases per region according to the detection location in the country (N = 362)

From: Detection of imported COVID-19 cases worldwide: early assessment of airport entry screening, 24 January until 17 February 2020

Region Airport screening ( N = 40) Health care settings ( N = 231) Cases among repatriated travelers who were detected in quarantine facilities Cases with unknown /uncertain place of detection Total
Primary cases Primary cases detected during public health observation initiated after screening a Secondary cases Primary cases Secondary cases b
Western Pacific 11 4 6 65 96 14 47 243
South East Asia 3 3 4 5 10 2 12 39
Americas 0 0 0 13 3 3 4 23
European 0 3 5 12 23 4 0 47
Eastern Mediterranean 0 1 0 1 3 1 4 10
Total, N = 362 (%) 14 (3.9) 11 (3.0) 15 (4.1) 96 (26.5) 135 (37.3) 24 (6.7) 67 (18.5) 362 (100)
  1. Source: Grey literature including online newspapers and governmental reports searched from 24 January to 17 February 2020
  2. aPrimary cases detected during public health observation initiated after screening: cases among the passengers who were asymptomatic when they passed the airport screening but they were put under public health observation and they developed symptoms during the time they were under observation
  3. bSecondary cases at health care settings: the number of secondary cases including those identified through contact tracing of the primary cases and during quarantine of contacts of the primary cases