Heterogeneity in influenza seasonality and vaccine effectiveness in Australia, Chile, New Zealand and South Africa: early estimates of the 2019 influenza season

Author:

Sullivan Sheena G1,Arriola Carmen S2,Bocacao Judy3,Burgos Pamela4,Bustos Patricia5,Carville Kylie S6,Cheng Allen C78,Chilver Monique BM9,Cohen Cheryl10,Deng Yi-Mo11,El Omeiri Nathalie12,Fasce Rodrigo A13,Hellferscee Orienka10,Huang Q Sue3,Gonzalez Cecilia4,Jelley Lauren3,Leung Vivian KY1,Lopez Liza14,McAnerney Johanna M10,McNeill Andrea14,Olivares Maria F15,Peck Heidi11,Sotomayor Viviana15,Tempia Stefano1617102,Vergara Natalia15,von Gottberg Anne10,Walaza Sibongile10,Wood Timothy14

Affiliation:

1. World Health Organization (WHO) 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

2. Influenza Division, Centers for Disease Control and Prevention, Atlanta, United States

3. National Influenza Centre, Institute of Environmental Science and Research, Wellington, New Zealand

4. Programa Nacional de Inmunizaciones, Ministerio de Salud, Santiago, Chile

5. Sección de Virus Respiratorios y Exantematicos, Instituto de Salud Publica de Chile, Santiago, Chile

6. Victorian Infectious Diseases Reference Laboratory, Royal Melbourne Hospital, at the Peter Doherty Institute for Infection and Immunity, Melbourne, Australia

7. Department of Infectious Diseases, Alfred Health, and Central Clinical School, Monash University, Melbourne, Australia

8. School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia

9. Discipline of General Practice, University of Adelaide, Adelaide, Australia

10. National Institute for Communicable Diseases, Johannesburg, South Africa

11. WHO Collaborating Centre for Reference and Research on Influenza, Royal Melbourne Hospital, at the Peter Doherty Institute for Reference and Research on Influenza, Melbourne, Australia

12. Pan American Health Organization(PAHO)/WHO Regional Office for the Americas, Washington, United States

13. Subdepartamento de Enfermedades Virales, Instituto de Salud Publica de Chile, Santiago, Chile

14. Health Intelligence Team, Institute of Environmental Science and Research, Wellington, New Zealand

15. Departamento de Epidemiologia, Ministerio de Salud, Santiago, Chile

16. MassGenics, Duluth, United States

17. Influenza Program, Centers for Disease Control and Prevention, Pretoria, South Africa

Abstract

We compared 2019 influenza seasonality and vaccine effectiveness (VE) in four southern hemisphere countries: Australia, Chile, New Zealand and South Africa. Influenza seasons differed in timing, duration, intensity and predominant circulating viruses. VE estimates were also heterogeneous, with all-ages point estimates ranging from 7–70% (I2: 33%) for A(H1N1)pdm09, 4–57% (I2: 49%) for A(H3N2) and 29–66% (I2: 0%) for B. Caution should be applied when attempting to use southern hemisphere data to predict the northern hemisphere influenza season.

Publisher

European Centre for Disease Control and Prevention (ECDC)

Subject

Virology,Public Health, Environmental and Occupational Health,Epidemiology

Reference16 articles.

1. Chasing Seasonal Influenza - The Need for a Universal Influenza Vaccine.;Paules;N Engl J Med,2018

2. Low interim influenza vaccine effectiveness, Australia, 1 May to 24 September 2017.;Sullivan;Euro Surveill,2017

3. Influenza epidemiology in patients admitted to sentinel Australian hospitals in 2016: the Influenza Complications Alert Network (FluCAN).;Cheng;Commun Dis Intell Q Rep,2017

4. Estimating the burden of influenza-associated hospitalizations and deaths in Chile during 2012-2014.;Sotomayor;Influenza Other Respir Viruses,2018

5. Effectiveness of seasonal influenza vaccine in preventing influenza primary care visits and hospitalisation in Auckland, New Zealand in 2015: interim estimates.;Bissielo;Euro Surveill,2016

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