Effectiveness of influenza vaccines in children aged 6 to 59 months: a test-negative case-control study at primary care and hospital level, Spain 2023/24.
Euro Surveill
; 29(40)2024 Oct.
Article
in En
| MEDLINE
| ID: mdl-39364601
ABSTRACT
During 2023/24, all children aged 6 to 59 months were targeted for seasonal influenza vaccination in Spain nationally. Using a test-negative case-control design with sentinel surveillance data, we estimated adjusted influenza vaccine effectiveness (IVE) against any influenza type to be 70% (95% confidence interval (CI) 51 to 81%) for primary care patients with acute respiratory illness (ARI) and 77% (95% CI 21 to 93%) for hospitalised patients with severe ARI. In primary care, where most subtyped viruses (61%; 145/237) were A(H1N1), adjusted IVE was 77% (95% CI 56 to 88%) against A(H1N1)pdm09.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Primary Health Care
/
Influenza Vaccines
/
Vaccination
/
Sentinel Surveillance
/
Influenza, Human
/
Influenza A Virus, H1N1 Subtype
Limits:
Child, preschool
/
Female
/
Humans
/
Infant
/
Male
Country/Region as subject:
Europa
Language:
En
Journal:
Euro Surveill
Journal subject:
DOENCAS TRANSMISSIVEIS
Year:
2024
Document type:
Article
Affiliation country:
Spain
Country of publication:
Sweden