Optimal timing of influenza vaccination in young children: population based cohort study.
BMJ
; 384: e077076, 2024 02 21.
Article
em En
| MEDLINE
| ID: mdl-38383038
ABSTRACT
OBJECTIVE:
To assess optimal timing of influenza vaccination in young children.DESIGN:
Population based cohort study.SETTING:
United States.PARTICIPANTS:
Commercially insured children aged 2-5 years who were vaccinated against influenza during 2011-18. MAIN OUTCOMEMEASURE:
Rates of diagnosis of influenza among children who were vaccinated against influenza, by birth month.RESULTS:
Overall, 819 223 children aged 2-5 received influenza vaccination. Children vaccinated in November and December were least likely to have a diagnosis of influenza, a finding that may be confounded by unmeasured factors that influence the timing of vaccination and risk of influenza. Vaccination commonly occurred on days of preventive care visits and during birth months. Children born in October were disproportionately vaccinated in October and were, on average, vaccinated later than children born in August and earlier than those born in December. Children born in October had the lowest rate of influenza diagnosis (for example, 2.7% (6016/224 540) versus 3.0% (6462/212 622) for those born in August; adjusted odds ratio 0.88, 95% confidence interval 0.85 to 0.92).CONCLUSIONS:
In a quasi-experimental analysis of young children vaccinated against influenza, birth month was associated with the timing of vaccination through its influence on the timing of preventive care visits. Children born in October were most likely to be vaccinated in October and least likely to have a diagnosis of influenza, consistent with recommendations promoting October vaccination.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Vacinas contra Influenza
/
Influenza Humana
Limite:
Child
/
Child, preschool
/
Female
/
Humans
/
Pregnancy
País/Região como assunto:
America do norte
Idioma:
En
Revista:
BMJ
Assunto da revista:
MEDICINA
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
Estados Unidos
País de publicação:
Reino Unido