Documentdetail
ID kaart
doi:10.1186/s12879-022-07898-y...
Auteur
Kajiume, Teruyuki Mukai, Sumera Toyota, Nobutaka Kanazawa, Ikuo Kato, Akiko Akimoto, Etsushi Shirakawa, ToshioLangue
enEditor
BioMed Central
Categorie
Medicine & Public Health
Jaar
2022
vermelding datum
07-12-2022
Trefwoorden
follow-up studies surveys and questionnaires influenza vaccines immunization infection influenza infection vaccinated morbidityBeschrijving
Background Influenza spreads from schools to the rest of society.
Thus, we conducted questionnaire surveys of influenza vaccination in elementary and middle schools in a district for 10 years to determine immunization rates and infection conditions among students who were potential sources of infection at home.
Methods The questionnaire-based survey on influenza vaccine administration, influenza infection, and influenza types contracted, as well as influenza immunization history, was conducted in 10 seasons over a period of 10 years.
Results In elementary schools, vaccination was associated with lower morbidity in most years, whereas in middle schools, morbidity increased among students who were vaccinated every year.
Our study did not find consistent trends among faculty and staff.
In addition, we found that morbidity was significantly higher among elementary ( P < 0.001) and middle ( P < 0.05) school students who had been vaccinated since infancy than among those who had not been vaccinated since infancy.
Conclusions The results of this study suggest that vaccinating infants for influenza may increase the risk of contracting influenza later in life.
Kajiume, Teruyuki,Mukai, Sumera,Toyota, Nobutaka,Kanazawa, Ikuo,Kato, Akiko,Akimoto, Etsushi,Shirakawa, Toshio, 2022, Effectiveness of seasonal influenza vaccine in elementary and middle schools: a 10-year follow-up investigation, BioMed Central
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