Detection of low pathogenicity influenza a(H7n3) virus during duck mortality event, Cambodia, 2017
- Suttie, Annika, Yann, Sokhoun, Phalla, Y., Tum, Sothyra, Deng, Yi-Mo, Hul, Vibol, Horm, Viseth, Barr, Ian, Greenhill, Andrew, Horwood, Paul, Osbjer, Kristina, Karlsson, Erik, Dussart, Philippe
- Authors: Suttie, Annika , Yann, Sokhoun , Phalla, Y. , Tum, Sothyra , Deng, Yi-Mo , Hul, Vibol , Horm, Viseth , Barr, Ian , Greenhill, Andrew , Horwood, Paul , Osbjer, Kristina , Karlsson, Erik , Dussart, Philippe
- Date: 2018
- Type: Text , Journal article
- Relation: Emerging Infectious Diseases Vol. 24, no. 6 (2018), p. 1103-1107
- Full Text: false
- Reviewed:
- Description: In January 2017, an estimated 3,700 (93%) of 4,000 Khaki Campbell ducks (Anas platyrhynchos domesticus) died in Kampong Thom Province, Cambodia. We detected low pathogenicity avian influenza A(H7N3) virus and anatid herpesvirus 1 (duck plague) in the affected flock; however, the exact cause of the mortality event remains unclear.
Influenza A(H5N1) viruses with A(H9N2) single gene (matrix or PB1) reassortment isolated from Cambodian live bird markets
- Suttie, Annika, Karlsson, Erik, Deng, Yi-Mo, Horm, Srey, Yann, Sokhoun, Tok, Songha, Sorn, San, Holl, Davun, Tum, Sothyra, Hurt, Aeron, Greenhill, Andrew, Barr, Ian, Horwood, Paul, Dussart, Philippe
- Authors: Suttie, Annika , Karlsson, Erik , Deng, Yi-Mo , Horm, Srey , Yann, Sokhoun , Tok, Songha , Sorn, San , Holl, Davun , Tum, Sothyra , Hurt, Aeron , Greenhill, Andrew , Barr, Ian , Horwood, Paul , Dussart, Philippe
- Date: 2018
- Type: Text , Journal article
- Relation: Virology Vol. 523, no. (2018), p. 22-26
- Full Text:
- Reviewed:
- Description: Live bird market surveillance for avian influenza viruses in Cambodia in 2015 has led to the detection of two 7:1 reassortant influenza A(H5N1) clade 2.3.2.1c viruses. These reassortant strains, designated A/duck/Cambodia/Z564W35M1/2015 and A/chicken/Cambodia/Z850W49M1/2015, both contained a single gene (PB1 and matrix gene, respectively) from concurrently circulating A(H9N2) influenza viruses. All other viral genes from both isolates clustered with A(H5N1) clade 2.3.2.1 viruses. Continued and prolonged co-circulation of influenza A(H5N1) and A(H9N2) viruses in Cambodian live bird markets may present a risk for the emergence of novel influenza reassortant viruses with negative agricultural and/or public health implications. © 2018
- Authors: Suttie, Annika , Karlsson, Erik , Deng, Yi-Mo , Horm, Srey , Yann, Sokhoun , Tok, Songha , Sorn, San , Holl, Davun , Tum, Sothyra , Hurt, Aeron , Greenhill, Andrew , Barr, Ian , Horwood, Paul , Dussart, Philippe
- Date: 2018
- Type: Text , Journal article
- Relation: Virology Vol. 523, no. (2018), p. 22-26
- Full Text:
- Reviewed:
- Description: Live bird market surveillance for avian influenza viruses in Cambodia in 2015 has led to the detection of two 7:1 reassortant influenza A(H5N1) clade 2.3.2.1c viruses. These reassortant strains, designated A/duck/Cambodia/Z564W35M1/2015 and A/chicken/Cambodia/Z850W49M1/2015, both contained a single gene (PB1 and matrix gene, respectively) from concurrently circulating A(H9N2) influenza viruses. All other viral genes from both isolates clustered with A(H5N1) clade 2.3.2.1 viruses. Continued and prolonged co-circulation of influenza A(H5N1) and A(H9N2) viruses in Cambodian live bird markets may present a risk for the emergence of novel influenza reassortant viruses with negative agricultural and/or public health implications. © 2018
Aerosol exposure of live bird market workers to viable influenza A/H5N1 and A/H9N2 viruses, Cambodia
- Horwood, Paul, Horm, Srey, Yann, Sokhoun, Tok, Songha, Chan, Malen, Suttie, Annika, Phalla, Y, Rith, Sareth, Siegers, Jurre, San, Sorn, Davun, Holl, Tum, Sothyra, Ly, Sowath, Tarantola, Arnaud, Dussart, Philippe, Karlsson, Erik
- Authors: Horwood, Paul , Horm, Srey , Yann, Sokhoun , Tok, Songha , Chan, Malen , Suttie, Annika , Phalla, Y , Rith, Sareth , Siegers, Jurre , San, Sorn , Davun, Holl , Tum, Sothyra , Ly, Sowath , Tarantola, Arnaud , Dussart, Philippe , Karlsson, Erik
- Date: 2023
- Type: Text , Journal article
- Relation: Zoonoses and Public Health Vol. 70, no. 2 (2023), p. 171-175
- Full Text:
- Reviewed:
- Description: Live bird markets (LBMs) have been identified as key factors in the spread, persistence and evolution of avian influenza viruses (AIVs). In addition, these settings have been associated with human infections with AIVs of pandemic concern. Exposure to aerosolised AIVs by workers in a Cambodian LBM was assessed using aerosol impact samplers. LBM vendors were asked to wear an air sampler for 30 min per day for 1 week while continuing their usual activities in the LBM during a period of high AIV circulation (February) and a period of low circulation (May). During the period of high circulation, AIV RNA was detected from 100% of the air samplers using molecular methods and viable AIV (A/H5N1 and/or A/H9N2) was isolated from 50% of air samplers following inoculation into embryonated chicken eggs. In contrast, AIV was not detected by molecular methods or successfully isolated during the period of low circulation. This study demonstrates the increased risk of aerosol exposure of LBM workers to AIVs during periods of high circulation and highlights the need for interventions during these high-risk periods. Novel approaches, such as environmental sampling, should be further explored at key high-risk interfaces as a potentially cost-effective alternative for monitoring pandemic threats. © 2022 The Authors. Zoonoses and Public Health published by Wiley-VCH GmbH.
Aerosol exposure of live bird market workers to viable influenza A/H5N1 and A/H9N2 viruses, Cambodia
- Authors: Horwood, Paul , Horm, Srey , Yann, Sokhoun , Tok, Songha , Chan, Malen , Suttie, Annika , Phalla, Y , Rith, Sareth , Siegers, Jurre , San, Sorn , Davun, Holl , Tum, Sothyra , Ly, Sowath , Tarantola, Arnaud , Dussart, Philippe , Karlsson, Erik
- Date: 2023
- Type: Text , Journal article
- Relation: Zoonoses and Public Health Vol. 70, no. 2 (2023), p. 171-175
- Full Text:
- Reviewed:
- Description: Live bird markets (LBMs) have been identified as key factors in the spread, persistence and evolution of avian influenza viruses (AIVs). In addition, these settings have been associated with human infections with AIVs of pandemic concern. Exposure to aerosolised AIVs by workers in a Cambodian LBM was assessed using aerosol impact samplers. LBM vendors were asked to wear an air sampler for 30 min per day for 1 week while continuing their usual activities in the LBM during a period of high AIV circulation (February) and a period of low circulation (May). During the period of high circulation, AIV RNA was detected from 100% of the air samplers using molecular methods and viable AIV (A/H5N1 and/or A/H9N2) was isolated from 50% of air samplers following inoculation into embryonated chicken eggs. In contrast, AIV was not detected by molecular methods or successfully isolated during the period of low circulation. This study demonstrates the increased risk of aerosol exposure of LBM workers to AIVs during periods of high circulation and highlights the need for interventions during these high-risk periods. Novel approaches, such as environmental sampling, should be further explored at key high-risk interfaces as a potentially cost-effective alternative for monitoring pandemic threats. © 2022 The Authors. Zoonoses and Public Health published by Wiley-VCH GmbH.
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