Impact of Meningococcal ACWY Vaccination Program during 2017-18 Epidemic, Western Australia, Australia.
Emerg Infect Dis
; 30(2): 270-278, 2024 Feb.
Article
em En
| MEDLINE
| ID: mdl-38270172
ABSTRACT
The rising incidence of invasive meningococcal disease (IMD) caused by Neisseria meningitidis serogroup W in Western Australia, Australia, presents challenges for prevention. We assessed the effects of a quadrivalent meningococcal vaccination program using 2012-2020 IMD notification data. Notification rates peaked at 1.8/100,000 population in 2017; rates among Aboriginal and Torres Strait Islander populations were 7 times higher than for other populations. Serogroup W disease exhibited atypical manifestations and increased severity. Of 216 cases, 20 IMD-related deaths occurred; most (19/20) were in unvaccinated persons. After the 2017-2018 targeted vaccination program, notification rates decreased from 1.6/100,000 population in 2018 to 0.9/100,000 population in 2019 and continued to decline in 2020. Vaccine effectiveness (in the 1-4 years age group) using the screening method was 93.6% (95% CI 50.1%-99.2%) in 2018 and 92.5% (95% CI 28.2%-99.2%) in 2019. Strategic planning and prompt implementation of targeted vaccination programs effectively reduce IMD.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Vacinas Meningocócicas
/
Infecções Meningocócicas
/
Neisseria meningitidis
Limite:
Humans
País/Região como assunto:
Oceania
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article