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Volume 32, Number 3—March 2026

Research Letter

Detecting Influenza A(H5N1) Viruses through Severe Acute Respiratory Infection Surveillance, Cambodia

William W. DavisComments to Author , Kathrine R. Tan, Borann Sar, Alyssa Finlay, Heng Seng, Vicheth Long, Savuth Chin, Darapheak Chau, Kim Sreng Leang, Mich Vann, Sovandara Lam, Dara Chan, Ly Vannara Tek, Sovann Ly, and Timothy M. Uyeki
Author affiliation: US Centers for Disease Control and Prevention, Atlanta, Georgia, USA (W.W. Davis, K.R. Tan, B. Sar, A. Finlay, T.M. Uyeki); US Centers for Disease Control and Prevention, Phnom Penh, Cambodia (H. Seng, V. Long, S. Ly); Cambodia National Institute of Public Health, Phnom Penh (S. Chin, D. Chau); National Pediatric Hospital, Phnom Penh (K.S. Leang); Khmer Soviet Hospital, Phnom Penh (M. Vann); Kampot Provincial Hospital, Kampot, Cambodia (S. Lam); Svay Rieng Provincial Hospital, Svay Rieng, Cambodia (D. Chan); Kuntha Bopha Phnom Penh Hospital, Phnom Penh (L.V. Tek)

Main Article

Table

SARI cases and influenza A and influenza A(H5N1) virus detections in humans, by surveillance site, Cambodia, January 2023–March 2025*

Detections Surveillance site
 Total
AHC CCH KCH KPH KSH KVH NPH PKH SVH
SARI cases 1,078 547 888 521 1,168 779 2,403 1,635 1,346 10,365
Influenza A virus detections 62 87 67 49 141 103 201 119 94 923
H5N1 virus detections 0 0 0 1 3 1 3 0 1 9

*All patients with SARI were tested for influenza. AHC, Angkor Hospital for Children, Siem Reap, Cambodia; CCH, Chey Chum Nas Hospital, Ta Khmau, Cambodia; KCH, Kampong Cham Hospital, Kampong Cham, Cambodia; KPH, Kampot Hospital, Kampot, Cambodia; KSH, Khmer Soviet Hospital, Phnom Penh, Cambodia; KVH, Kirivong Hospital, Takeo Province; NPH, National Pediatric Hospital, Phnom Penh; PKH, Preah Kosomak Hospital, Phnom Penh; SARI, severe acute respiratory infection; SVH, Svay Rieng Hospital, Svay Rieng, Cambodia.

Main Article

Page created: February 04, 2026
Page updated: March 20, 2026
Page reviewed: March 20, 2026
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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