Detecting spread of avian influenza A(H7N9) virus beyond China

Alexander J Millman; 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; Marc-Alain Widdowson

doi:10.3201/eid2105.141756

Detecting spread of avian influenza A(H7N9) virus beyond China

Alexander J Millman, 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, Marc-Alain Widdowson

Institute of Tropical Medicine

Research output: Contribution to journal › A1: Web of Science-article › peer-review

Abstract

During February 2013-March 2015, a total of 602 human cases of low pathogenic avian influenza A(H7N9) were reported; no autochthonous cases were reported outside mainland China. In contrast, since highly pathogenic avian influenza A(H5N1) reemerged during 2003 in China, 784 human cases in 16 countries and poultry outbreaks in 53 countries have been reported. Whether the absence of reported A(H7N9) outside mainland China represents lack of spread or lack of detection remains unclear. We compared epidemiologic and virologic features of A(H5N1) and A(H7N9) and used human and animal influenza surveillance data collected during April 2013-May 2014 from 4 Southeast Asia countries to assess the likelihood that A(H7N9) would have gone undetected during 2014. Surveillance in Vietnam and Cambodia detected human A(H5N1) cases; no A(H7N9) cases were detected in humans or poultry in Southeast Asia. Although we cannot rule out the possible spread of A(H7N9), substantial spread causing severe disease in humans is unlikely.

Original language	English
Journal	Emerging Infectious Diseases
Volume	21
Issue number	5
Pages (from-to)	741-9
Number of pages	9
ISSN	1080-6040
DOIs	https://doi.org/10.3201/eid2105.141756
Publication status	Published - 2015

Keywords

Animals
Asia, Southeastern/epidemiology
China/epidemiology
Disease Outbreaks
Geography
Humans
Influenza A Virus, H5N1 Subtype
Influenza A Virus, H7N9 Subtype
Influenza in Birds/epidemiology
Influenza, Human/epidemiology
Population Surveillance
Poultry

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Millman, A. J., Havers, F., Iuliano, A. D., Davis, C. T., Sar, B., Sovann, L., Chin, S., Corwin, A. L., Vongphrachanh, P., Douangngeun, B., Lindblade, K. A., Chittaganpitch, M., Kaewthong, V., Kile, J. C., Nguyen, H. T., Pham, D. V., Donis, R. O., & Widdowson, M.-A. (2015). Detecting spread of avian influenza A(H7N9) virus beyond China. Emerging Infectious Diseases, 21(5), 741-9. https://doi.org/10.3201/eid2105.141756

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title = "Detecting spread of avian influenza A(H7N9) virus beyond China",

abstract = "During February 2013-March 2015, a total of 602 human cases of low pathogenic avian influenza A(H7N9) were reported; no autochthonous cases were reported outside mainland China. In contrast, since highly pathogenic avian influenza A(H5N1) reemerged during 2003 in China, 784 human cases in 16 countries and poultry outbreaks in 53 countries have been reported. Whether the absence of reported A(H7N9) outside mainland China represents lack of spread or lack of detection remains unclear. We compared epidemiologic and virologic features of A(H5N1) and A(H7N9) and used human and animal influenza surveillance data collected during April 2013-May 2014 from 4 Southeast Asia countries to assess the likelihood that A(H7N9) would have gone undetected during 2014. Surveillance in Vietnam and Cambodia detected human A(H5N1) cases; no A(H7N9) cases were detected in humans or poultry in Southeast Asia. Although we cannot rule out the possible spread of A(H7N9), substantial spread causing severe disease in humans is unlikely. ",

keywords = "Animals, Asia, Southeastern/epidemiology, China/epidemiology, Disease Outbreaks, Geography, Humans, Influenza A Virus, H5N1 Subtype, Influenza A Virus, H7N9 Subtype, Influenza in Birds/epidemiology, Influenza, Human/epidemiology, Population Surveillance, Poultry",

author = "Millman, {Alexander J} and Fiona Havers and Iuliano, {A Danielle} and Davis, {C Todd} and Borann Sar and Ly Sovann and Savuth Chin and Corwin, {Andrew L} and Phengta Vongphrachanh and Bounlom Douangngeun and Lindblade, {Kim A} and Malinee Chittaganpitch and Viriya Kaewthong and Kile, {James C} and Nguyen, {Hien T} and Pham, {Dong V} and Donis, {Ruben O} and Marc-Alain Widdowson",

note = "PPU",

year = "2015",

doi = "10.3201/eid2105.141756",

language = "English",

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journal = "Emerging Infectious Diseases",

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Millman, AJ, Havers, F, Iuliano, AD, Davis, CT, Sar, B, Sovann, L, Chin, S, Corwin, AL, Vongphrachanh, P, Douangngeun, B, Lindblade, KA, Chittaganpitch, M, Kaewthong, V, Kile, JC, Nguyen, HT, Pham, DV, Donis, RO & Widdowson, M-A 2015, 'Detecting spread of avian influenza A(H7N9) virus beyond China', Emerging Infectious Diseases, vol. 21, no. 5, pp. 741-9. https://doi.org/10.3201/eid2105.141756

TY - JOUR

T1 - Detecting spread of avian influenza A(H7N9) virus beyond China

AU - Millman, Alexander J

AU - Havers, Fiona

AU - Iuliano, A Danielle

AU - Davis, C Todd

AU - Sar, Borann

AU - Sovann, Ly

AU - Chin, Savuth

AU - Corwin, Andrew L

AU - Vongphrachanh, Phengta

AU - Douangngeun, Bounlom

AU - Lindblade, Kim A

AU - Chittaganpitch, Malinee

AU - Kaewthong, Viriya

AU - Kile, James C

AU - Nguyen, Hien T

AU - Pham, Dong V

AU - Donis, Ruben O

AU - Widdowson, Marc-Alain

N1 - PPU

PY - 2015

Y1 - 2015

N2 - During February 2013-March 2015, a total of 602 human cases of low pathogenic avian influenza A(H7N9) were reported; no autochthonous cases were reported outside mainland China. In contrast, since highly pathogenic avian influenza A(H5N1) reemerged during 2003 in China, 784 human cases in 16 countries and poultry outbreaks in 53 countries have been reported. Whether the absence of reported A(H7N9) outside mainland China represents lack of spread or lack of detection remains unclear. We compared epidemiologic and virologic features of A(H5N1) and A(H7N9) and used human and animal influenza surveillance data collected during April 2013-May 2014 from 4 Southeast Asia countries to assess the likelihood that A(H7N9) would have gone undetected during 2014. Surveillance in Vietnam and Cambodia detected human A(H5N1) cases; no A(H7N9) cases were detected in humans or poultry in Southeast Asia. Although we cannot rule out the possible spread of A(H7N9), substantial spread causing severe disease in humans is unlikely.

AB - During February 2013-March 2015, a total of 602 human cases of low pathogenic avian influenza A(H7N9) were reported; no autochthonous cases were reported outside mainland China. In contrast, since highly pathogenic avian influenza A(H5N1) reemerged during 2003 in China, 784 human cases in 16 countries and poultry outbreaks in 53 countries have been reported. Whether the absence of reported A(H7N9) outside mainland China represents lack of spread or lack of detection remains unclear. We compared epidemiologic and virologic features of A(H5N1) and A(H7N9) and used human and animal influenza surveillance data collected during April 2013-May 2014 from 4 Southeast Asia countries to assess the likelihood that A(H7N9) would have gone undetected during 2014. Surveillance in Vietnam and Cambodia detected human A(H5N1) cases; no A(H7N9) cases were detected in humans or poultry in Southeast Asia. Although we cannot rule out the possible spread of A(H7N9), substantial spread causing severe disease in humans is unlikely.

KW - Animals

KW - Asia, Southeastern/epidemiology

KW - China/epidemiology

KW - Disease Outbreaks

KW - Geography

KW - Humans

KW - Influenza A Virus, H5N1 Subtype

KW - Influenza A Virus, H7N9 Subtype

KW - Influenza in Birds/epidemiology

KW - Influenza, Human/epidemiology

KW - Population Surveillance

KW - Poultry

U2 - 10.3201/eid2105.141756

DO - 10.3201/eid2105.141756

M3 - A1: Web of Science-article

C2 - 25897654

SN - 1080-6040

VL - 21

SP - 741

EP - 749

JO - Emerging Infectious Diseases

JF - Emerging Infectious Diseases

IS - 5

ER -

Detecting spread of avian influenza A(H7N9) virus beyond China

Abstract

Keywords

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