Skip directly to site content Skip directly to page options Skip directly to A-Z link Skip directly to A-Z link Skip directly to A-Z link
Volume 21, Number 5—May 2015
Perspective

Detecting Spread of Avian Influenza A(H7N9) Virus Beyond China

Alexander J. MillmanComments to Author , Fiona Havers, A. Danielle Iuliano, C. Todd Davis, Borann Sar, Ly Sovann, Savuth Chin, Andrew L. Corwin, Phengta Vongphrachanh, Bounlom Douangngeun, Kim A. Lindblade, Malinee Chittaganpitch, Viriya Kaewthong, James C. Kile, Hien T. Nguyen, Dong V. Pham, Ruben O. Donis, and Marc-Alain Widdowson
Author affiliations: Author affiliations: Centers for Disease Control and Prevention (CDC), Atlanta, Georgia, USA (A.J. Millman, F. Havers, A.D. Iuliano, C.T. Davis, R.C. Donis, M.-A. Widdowson); CDC, Phnom Penh, Cambodia (B. Sar); Ministry of Health, Phnom Penh (L. Sovan); National Institute of Public Health, Phnom Penh (S. Chin); CDC, Vientiane, Laos (A.L. Corwin); National Center for Laboratory Epidemiology, Vientiane (P. Vongphrachanh); Ministry of Agriculture and Forestry, Vientiane (B. Douangngeun); Thailand Ministry of Public Health–CDC Collaboration, Nonthaburi, Thailand (K.A. Lindblade); National Institute of Health, Nonthaburi (M. Chittaganpitch); Ministry of Agriculture and Cooperatives, Bangkok, Thailand (V. Kaewthong); CDC, Hanoi, Vietnam (J.C. Kile); Ministry of Health, Hanoi (H.T. Nguyen); Ministry of Agriculture and Rural Development, Hanoi (D.V. Pham)

Main Article

Table 2

Surveillance for SARI and ILI and passive surveillance for pneumonia for avian influenza in humans, 4 Southeast Asia countries, April 1, 2013–May 30, 2014*

Surveillance system No. illnesses meeting case definition Total no. samples tested A(H5N1), no. positive/no. tested A(H7N9), no. positive/no. tested
Vietnam
SARI 11,558 2,485 0/798 0/798
ILI 29,027 3,770 0/0 0/0
Passive surveillance for pneumonia†
 238
 237
 4/70
 0/70
Thailand
SARI ‡ 1,025 0/106§ 0/106§
ILI ‡ 3,850 0/807 0/807
Passive surveillance for pneumonia ‡ 157 0/157 0/43
Event-based surveillance 18 outbreaks 162 0/69§ 0/69§
Surveillance for severe or fatal pneumonia
 208
 208
 0/14§
 0/14§
Cambodia
SARI 2,282 2,282 7/219 0/0
ILI
 1,567
 1,567
 1/10
 0/0
Laos
SARI 1,469 698 0/15 0/15
ILI 8,962 1,550 0/0 0/0

*ILI, influenza-like illness; SARI, severe acute respiratory infection.
†Severe viral pneumonia surveillance system.
‡Total number of illnesses meeting the case definition is unknown for ILI. For SARI, the number of illnesses meeting the case definition is unknown but believed to be close to 100% of persons sampled. Reporting to the passive pneumonia surveillance system is in accordance with physician discretion, and no clear case definition is applied.
§A(H5N1) and A(H7N9) testing is conducted only on specimens positive for influenza A virus.

Main Article

Page created: April 17, 2015
Page updated: April 17, 2015
Page reviewed: April 17, 2015
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.
file_external