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Table 1 Travel information and case data during the initial outbreak of 2009 pH1N1

From: A statistical method utilizing information of imported cases to estimate the transmissibility for an influenza pandemic

Country Number of passengersa Arrival dates Illness onset date Additional referenceb
United States 2,474,897 - March 28 -
Canada 101,313 April 8 April 11 -
El Salvador 15,090 April 19 - -
Colombia 24,535 - April 14 [26]
United Kingdom 20,513 April 21 April 24 -
Spain 65,724 April 22 April 25 -
France 61,960 - April 23 [18]
Costa Rica 16,950 April 25 April 25 -
Argentina 24,609 April 25 April 27 [27]
Cuba 42,802 April 25 - -
The Netherlands 27,640 April 27 - -
Germany 35,772 - April 28 -
Hong Kong 35,706 April 30 April 30 [30]
Italy 12,060 April 29 May 3 [31]
Guatemala 39,460 - May 1 -
  1. aThe total number of passengers on flights from Mexico to different countries between March and April 2009
  2. bOther supporting information from press and other articles in additional to Fraser et al. [9] and Balcan et al. [12]