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Leung VKY, Deng YM, Todd A, Peck H, Buettner I, Zakis T, Subbarao K, Barr IG, Nahapetyan K, Inbanathan FY, Samaan M, Reading PC. A second external quality assessment of isolation and identification of influenza viruses in cell culture in the Asia Pacific region highlights improved performance by participating laboratories. J Clin Virol 2021; 142:104907. [PMID: 34274614 DOI: 10.1016/j.jcv.2021.104907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 06/27/2021] [Accepted: 06/30/2021] [Indexed: 11/20/2022]
Abstract
Influenza viruses must be amplified in cell culture for detailed antigenic analysis and for phenotypic assays assessing susceptibility to antiviral drugs or for other assays. Following on from the first external quality assessment (EQA) for isolation and identification of influenza viruses using cell culture techniques in 2016, a follow up EQA was performed in 2019 for National Influenza Centres (NICs) in the World Health Organization (WHO) South East Asia and Western Pacific Regions. Nineteen WHO NICs performed influenza virus isolation and identification techniques on an EQA panel comprising 16 samples, containing influenza A or B viruses and negative control samples. One sample was used exclusively to assess capacity to measure a hemagglutination titer and the other 15 samples were used for virus isolation and subsequent identification. Virus isolation from EQA samples was generally detected by assessment of cytopathic effect and/or hemagglutination assay while virus identification was determined by real time RT-PCR, hemagglutination inhibition and/or immunofluorescence assays. For virus isolation from EQA samples, 6/19 participating laboratories obtained 15/15 correct results in the first EQA (2016) compared to 11/19 in the follow up (2019). For virus identification in isolates derived from EQA samples, 6/19 laboratories obtained 15/15 correct results in 2016 compared to 13/19 in 2019. Overall, NIC laboratories in the Asia Pacific Region showed a significant improvement between 2016 and 2019 in terms of the correct results reported for isolation from EQA samples and identification of virus in isolates derived from EQA samples (p=0.01 and p=0.02, respectively).
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Affiliation(s)
- Vivian K Y Leung
- WHO Collaborating Centre for Reference and Research on Influenza, Victorian Infectious Diseases Reference Laboratory at the Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia
| | - Yi-Mo Deng
- WHO Collaborating Centre for Reference and Research on Influenza, Victorian Infectious Diseases Reference Laboratory at the Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia
| | - Angela Todd
- WHO Collaborating Centre for Reference and Research on Influenza, Victorian Infectious Diseases Reference Laboratory at the Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia
| | - Heidi Peck
- WHO Collaborating Centre for Reference and Research on Influenza, Victorian Infectious Diseases Reference Laboratory at the Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia
| | - Iwona Buettner
- WHO Collaborating Centre for Reference and Research on Influenza, Victorian Infectious Diseases Reference Laboratory at the Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia
| | - Tasoula Zakis
- WHO Collaborating Centre for Reference and Research on Influenza, Victorian Infectious Diseases Reference Laboratory at the Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia
| | - Kanta Subbarao
- WHO Collaborating Centre for Reference and Research on Influenza, Victorian Infectious Diseases Reference Laboratory at the Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia
| | - Ian G Barr
- WHO Collaborating Centre for Reference and Research on Influenza, Victorian Infectious Diseases Reference Laboratory at the Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia
| | - Karen Nahapetyan
- Division of Health Security and Emergencies, World Health Organization Regional Office for the Western Pacific, Manila, Philippines
| | - Francis Y Inbanathan
- Health Laboratory Services and Blood Safety - Communicable Diseases Department, World Health Organization Regional Office for the South East-Asia, New Delhi, India
| | - Magdi Samaan
- Global Influenza Programme, World Health Organization, Avenue Appia 20, 1211, Geneva 27, Switzerland
| | - Patrick C Reading
- WHO Collaborating Centre for Reference and Research on Influenza, Victorian Infectious Diseases Reference Laboratory at the Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia.
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Squires RC, Reading PC, Sullivan SG, Barr IG, Konings F. Influenza virus detection: driving change in public health laboratories in the Western Pacific Region. Western Pac Surveill Response J 2018; 9:68-70. [PMID: 31832255 PMCID: PMC6902649 DOI: 10.5365/wpsar.2018.9.5.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The continuous improvement in laboratory capacity for influenza surveillance has helped drive the development of diagnostic and virology laboratories in the Global Influenza Surveillance and Response System (GISRS) in the Western Pacific Region, at the same time strengthening their ability to detect and respond to infectious threats beyond influenza.
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Affiliation(s)
- Raynal C Squires
- WHO Regional Office for the Western
Pacific, Manila,
Philippines
| | - Patrick C Reading
- WHO Collaborating Centre for Reference and Research
on Influenza, Peter Doherty Institute for Infection and
Immunity, Melbourne,
Australia
| | - Sheena G Sullivan
- WHO Collaborating Centre for Reference and Research
on Influenza, Peter Doherty Institute for Infection and
Immunity, Melbourne,
Australia
| | - Ian G Barr
- WHO Collaborating Centre for Reference and Research
on Influenza, Peter Doherty Institute for Infection and
Immunity, Melbourne,
Australia
| | - Frank Konings
- WHO Regional Office for the Eastern
Mediterranean, Cairo,
Egypt
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