Pandemic influenza A vaccination and incidence of Guillain-Barré syndrome in Korea.

Autor(es): Kim Changsoo,Rhie Seonkyeong,Suh Mina,Kang Dae Ryong,Choi Yoon Jung,Bae Geun-Ryang,Choi Young-Chul,Jun Byung Yool,Lee Joon Soo

Resumo: Many studies have investigated the association between Guillain-Barré syndrome (GBS) and vaccinations during the influenza A H1N1 pandemic of 2009 (pH1N1). Based on a nationally representative sample, we estimated the incidence of GBS during the pandemic period in Korea. All medical records of GBS cases were reviewed in 28 randomly selected hospitals during 2008-2010, and the number of GBS cases at the national level was extrapolated using emergency care utilization data. The GBS rate per 100,000 person-years was estimated in the reference and pandemic periods. The incidence of GBS was 0.63 (95% CI: 0.37-0.89) per 100,000 person-years in the reference period and 0.87 (0.49-1.26) in the pandemic period. During the vaccination season, the pandemic period GBS incidence rate was not significantly higher than the reference period incidence rate (rate ratio: 1.52; 0.99-2.32), but difference was observed among persons aged 20-34 years. Rate of GBS increased after pH1N1 vaccination compared to the reference period (1.46, 1.26-1.68). The incidence of GBS increased slightly but not significantly during the pandemic period, although pH1N1 vaccination increased the GBS rate. Therefore, mass influenza vaccination programs should not be precluded on the basis of GBS.

Palavras-Chave: Guillain-Barré syndrome, Incidence rate, Influenza, Vaccination

Imprenta: Vaccine, v. 33, n. 15, p. 1815-1823, 2015

Identificador do objeto digital: 10.1016/j.vaccine.2015.02.035

Descritores: Guillain-Barre Syndrome - Pathogenesis ; Guillain-Barre Syndrome - Viral infections ; Guillain-Barre Syndrome - Virus ; Guillain-Barre Syndrome - Vaccine ; Guillain-Barre Syndrome - Epidemic ; Guillain-Barre Syndrome - Epidemiology ; Guillain-Barre Syndrome - Immunology ; Guillain-Barre Syndrome - Public health

Data de publicação: 2015