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Volume 20, Number 1—January 2014
Dispatch

Contact Tracing for Influenza A(H1N1)pdm09 Virus–infected Passenger on International Flight

Ananda G. Shankar, Kulsum Janmohamed, Babatunde OlowokureComments to Author , Gillian E. Smith, Angela H. Hogan, Valerie De Souza, Anders Wallensten, Isabel Oliver, Oliver Blatchford, Paul Cleary, and Sue Ibbotson
Author affiliations: Health Protection Agency, West Midlands Region, Birmingham, UK (A.G. Shankar, K. Janmohamed, B. Olowokure, G.E. Smith, V. De Souza, S. Ibbotson); Health Protection Agency, Southwest Region, Gloucester, UK (A.H. Hogan, A. Wallensten, I. Oliver); Swedish Institute for Communicable Disease Control, Solna, Sweden (A. Wallensten); NHS National Services Scotland, Glasgow Scotland, UK (O. Blatchford); Health Protection Agency, Northwest Region, Liverpool, UK (P. Cleary)

Main Article

Table

Selected characteristics of persons with confirmed cases of influenza A(H1N1)pdm09 virus infection, United Kingdom, April 2009*

Case-patient no. Symptomatic during flight No. rows from index case-patient Day of symptom onset, April 2009, no. days before/after flight
1† Yes 18th, 3 before
2‡ No Same 23rd, 2 after
3 No 2 behind 24th, 3 after
4 No 4 in front 26th, 5 after
5 No 4 in front 24th, 3 after
6 No 5 behind 22nd, 1 after
7 No 8 behind 24th, 3 after
8§ NA NA 25th, 4 after
9¶ NA NA 26th, 5 after

*Characteristics were determined during flight-related contact tracing. NA, not applicable.
†Case-patient 1, the index patient, had the first laboratory-confirmed case of A(H1N1)pdm09 infection in the United Kingdom.
‡Case-patient 2 was the traveling companion of case-patient 1.
§Case-patient 8 was not on the flight and is a secondary case-patient who is believed to have been exposed to the virus by case-patient 2.
¶Case-patient 9 was not on the flight and is believed to have been exposed to the virus by a passenger who was on the flight but who had test results negative for A(H1N1)pdm09 virus.

Main Article

Page created: January 03, 2014
Page updated: January 03, 2014
Page reviewed: January 03, 2014
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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