id author title date pages extension mime words sentences flesch summary cache txt cord-288972-dc6xbxha Cowling, Benjamin J Entry screening to delay local transmission of 2009 pandemic influenza A (H1N1) 2010-03-30 .txt text/plain 2252 116 46 BACKGROUND: After the WHO issued the global alert for 2009 pandemic influenza A (H1N1), many national health agencies began to screen travelers on entry in airports, ports and border crossings to try to delay local transmission. METHODS: We reviewed entry screening policies adopted by different nations and ascertained dates of official report of the first laboratory-confirmed imported H1N1 case and the first laboratory-confirmed untraceable or 'local' H1N1 case. To explore potential delays in local H1N1 transmission associated with entry screening, we ascertained dates of official report of the first laboratory-confirmed imported H1N1 case and the first laboratory-confirmed untraceable or 'local' H1N1 case (i.e. a case not otherwise epidemiologically linked with international travel, contact with an imported case or their secondary infectees) and the interval between these two events. Additional file 1: Use of entry screening* and interval between confirmation of first imported pandemic influenza A (H1N1) case and confirmation of first untraceable local case ./cache/cord-288972-dc6xbxha.txt ./txt/cord-288972-dc6xbxha.txt