Vaccine Effectiveness Against Influenza Hospitalization and Emergency Department Visits in 2 A(H3N2) Dominant Influenza Seasons Among Children <18 Years Old-New Vaccine Surveillance Network 2016-2017 and 2017-2018.
J Infect Dis
; 226(1): 91-96, 2022 08 12.
Article
em En
| MEDLINE
| ID: mdl-34951451
ABSTRACT
Studies have shown egg-adaptive mutations in influenza vaccine strains that might have impaired protection against circulating A(H3N2) influenza viruses during the 2016-2017 and 2017-2018 seasons. We used the test-negative design and multivariable models to assess vaccine effectiveness against influenza-associated hospitalization and emergency department visits among childrenâ
(<18 years old) during the 2016-2017 and 2017-2018 seasons. Effectiveness was 71% (95% confidence interval, 59%-79%), 46% (35%-55%), and 45% (33%-55%) against A(H1N1)pdm09, A(H3N2), and B viruses respectively, across both seasons. During high-severity seasons with concerns for vaccine mismatch, vaccination offered substantial protection against severe influenza outcomes requiring hospitalization or emergency department visits among children.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Vacinas contra Influenza
/
Influenza Humana
/
Vírus da Influenza A Subtipo H1N1
Tipo de estudo:
Observational_studies
/
Risk_factors_studies
/
Screening_studies
Limite:
Adolescent
/
Child
/
Humans
Idioma:
En
Revista:
J Infect Dis
Ano de publicação:
2022
Tipo de documento:
Article
País de afiliação:
Estados Unidos