Heterogeneity in influenza seasonality and vaccine effectiveness in Australia, Chile, New Zealand and South Africa: early estimates of the 2019 influenza season.
Euro Surveill
; 24(45)2019 Nov.
Article
in En
| MEDLINE
| ID: mdl-31718744
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.
Key words
Full text:
1
Database:
MEDLINE
Main subject:
Influenza B virus
/
Influenza Vaccines
/
Vaccination
/
Outcome Assessment, Health Care
/
Influenza, Human
/
Influenza A Virus, H1N1 Subtype
/
Influenza A Virus, H3N2 Subtype
/
Vaccine Potency
Type of study:
Diagnostic_studies
/
Prognostic_studies
/
Screening_studies
Limits:
Adolescent
/
Adult
/
Child
/
Female
/
Humans
/
Male
/
Middle aged
Country/Region as subject:
Africa
/
America do sul
/
Chile
/
Oceania
Language:
En
Journal:
Euro Surveill
Journal subject:
DOENCAS TRANSMISSIVEIS
Year:
2019
Type:
Article
Affiliation country:
Australia