Where has all the influenza gone? The impact of COVID-19 on the circulation of influenza and other respiratory viruses, Australia, March to September 2020

Eurosurveillance - Tập 25 Số 47 - 2020
Sheena G. Sullivan1, Sandra J. Carlson2, Allen C. Cheng3,4, Monique Chilver5, Dominic E. Dwyer6, Melissa Irwin7, Jen Kok6, Kristine Macartney8,9, Jennifer H MacLachlan10, Cara A Minney‐Smith11, David W. Smith12,11, Nigel Stocks5, Bruce Taylor6, Ian Barr13
1WHO Collaborating Centre for Reference and Research on Influenza, Royal Melbourne Hospital, and Doherty Department, University of Melbourne, at the Peter Doherty Institute for Infection and Immunity, Melbourne, Australia
2FluTracking, Hunter New England Population Health, Newcastle, Australia
3Department of Infectious Diseases, Alfred Health and Central Clinical School, Monash University, Melbourne, Australia
4School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
5Discipline of General Practice, University of Adelaide, Adelaide, Australia
6Centre for Infectious Diseases and Microbiology Laboratory Services, New South Wales Health Pathology - Institute of Clinical Pathology and Medical Research, Westmead Hospital, Westmead, Australia
7Rapid Surveillance, Centre for Epidemiology and Evidence, NSW Ministry of Health, Sydney, Australia
8Faculty of Medicine and Health, The University of Sydney, Sydney, Australia
9National Centre for Immunisation Research and Surveillance and The Children's Hospital Westmead, Sydney, Australia
10WHO Collaborating Centre for Viral Hepatitis, Royal Melbourne Hospital at the Peter Doherty Institute for Infection and Immunity, Melbourne, Australia
11Pathwest Laboratory Medicine WA, Nedlands, Australia
12Faculty of Health and Medical Sciences, University of Western Australia, Nedlands, Australia
13WHO Collaborating Centre for Reference and Research on Influenza, Royal Melbourne Hospital, and Department of Microbiology and Immunology, University of Melbourne, at the Peter Doherty Institute for Infection and Immunity, Melbourne, Australia

Tóm tắt

The coronavirus disease pandemic was declared in March 2020, as the southern hemisphere’s winter approached. Australia expected co-circulation of severe acute respiratory syndrome coronavirus 2, influenza and other seasonal respiratory viruses. However, influenza notifications were 7,029 (March–September) compared with an average 149,832 for the same period in 2015–2019*, despite substantial testing. Restrictions on movement within and into Australia may have temporarily eliminated influenza. Other respiratory pathogens also showed remarkably changed activity in 2020.

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