[Study on the effectiveness and cost-benefit of influenza vaccine on elderly population in Beijing city].
OBJECTIVE
To estimate the effectiveness of inactivated influenza vaccine in elderly population.


METHODS
An quasi-experimental study was used. 590 elderly people who volunteered to receive the influenza vaccine were served as vaccine group, while 602 persons who did not want to receive the inoculation but could match the vaccine group were served as controls. One baseline and three follow-up surveys were carried out.


RESULTS
The protective rates of influenza like ill (ILI) as 52.38%, 36.84% and 37.89% with the decreasing rates of visits to ILI clinic as 45.16%, 50.54% and 50.54% were found after 1 month, 3 month and 6 month of inoculation of influenza vaccine; The protective rates of common cold, other respiratory tract or chronic disease were 49.54%, 64.54%, and 38.82%, respectively. The benefit-cost ratio was 4.98:1 in elderly population.


CONCLUSIONS
Influenza vaccination could decrease ILI incidence and recurrence rates of related chronic diseases on elderly population to provide better economic benefits for the elderly.
Liu
Min
M
Department of Epidemiology, Public Health School of Peking University, Beijing 100083, China.
Liu
Gai-fen
GF
Wang
Yan
Y
Zhao
Wei
W
Wang
Li
L
Shi
Wei
W
Wen
Si-yao
SY
D000368:Aged; D002681:China / Q000453:epidemiology; D003362:Cost-Benefit Analysis; D005260:Female; D006801:Humans; D007252:Influenza Vaccines / Q000191:economics* / Q000276:immunology; D007251:Influenza, Human / Q000453:epidemiology* / Q000517:prevention & control; D008297:Male; D008875:Middle Aged; D014611:Vaccination
D007252:Influenza Vaccines