LSTM Home > LSTM Research > LSTM Online Archive

Primary Care Influenza-like Illness Surveillance in Ho Chi Minh City, Vietnam 2013-2015

Todd, Stacy ORCID:, Huong, Nguyen Thi Cam, Thanh, Nguyen Thi Le, Vy, Nguyen Ha Thao, Hung, Nguyen Thanh, Thao, Tran Thi Nhu, Phuong, Huynh Thi, van Doorn, H. Rogier, Hang, V T Ty, Chau, Nguyen Van Vinh, Read, Jonathan M, Lalloo, David ORCID: and Boni, Maciej F (2018) 'Primary Care Influenza-like Illness Surveillance in Ho Chi Minh City, Vietnam 2013-2015'. Influenza and Other Respiratory Viruses, Vol 15, Issue 5, pp. 623-631.

Todd_et_al-2018-Influenza_and_Other_Respiratory_Viruses.pdf - Accepted Version
Available under License Creative Commons Attribution.

Download (284kB) | Preview


Year‐round transmission of influenza has been detected in Vietnam through both national surveillance and other epidemiological studies. Understanding the demographic and clinical features of influenza‐like‐illness (ILI) presenting to primary care in urban Vietnam is vital to understand these transmission dynamics.

A prospective, observational study of patients with ILI in Ho Chi Minh City, Vietnam was conducted between August 2013 and November 2015 in a mix of public and private primary care settings. Molecular testing for Influenza A & B and 12 other respiratory viruses was performed.

1152 ILI patients were recruited. 322 and 136 subjects tested positive for influenza A and B, respectively. 193 subjects tested positive for another respiratory virus; most commonly rhinovirus and parainfluenza virus 3. Influenza was detected in 81% of the 116 study weeks. Three peaks of influenza activity were detected; an H3N2 peak April‐June 2014, an influenza B peak July‐December 2014, and a mixed H3N2 and H1N1 peak March‐September 2015. Subjects recruited from private clinics were more likely to have higher income, and to have reported previous influenza vaccination. Antibiotic use was common (50.3%) despite limited evidence of bacterial infection.

Influenza in southern Vietnam has complex transmission dynamics including periods of intense influenza activity of alternating types and subtypes. Broadening surveillance from hospital to the community in tropical settings is feasible and a valuable for improving our understanding of the global spread and evolution of the virus.

Item Type: Article
Subjects: WA Public Health > Preventive Medicine > WA 110 Prevention and control of communicable diseases. Transmission of infectious diseases
WA Public Health > Health Problems of Special Population Groups > WA 395 Health in developing countries
WC Communicable Diseases > Virus Diseases > Viral Respiratory Tract Infections. Respirovirus Infections > WC 515 Human influenza
Faculty: Department: Clinical Sciences & International Health > Clinical Sciences Department
Clinical Sciences & International Health > International Public Health Department
Digital Object Identifer (DOI):
SWORD Depositor: JISC Pubrouter
Depositing User: Karen Blower
Date Deposited: 08 Jun 2018 09:45
Last Modified: 22 Aug 2018 08:43


View details

Actions (login required)

Edit Item Edit Item