Study of the effect of vaccination on periodic structures of measles epidemics in Japan.
The purpose of this paper is to investigate the effect of vaccination on periodic structures of measles epidemics in Japan. We carried out spectral analysis for time series data of measles notifications collected in Japan. It was confirmed that the interepidemic period, which corresponds to the interval between major epidemics of measles, increases as the vaccination ratio increases. This result was supported by a theory based on a mathematical model for epidemics of infectious diseases. It was suggested that the interepidemic period is useful to estimate the effect of vaccination on measles incidences quantitatively.
Sumi
Ayako
A
Department of Hygiene, Sapporo Medical University School of Medicine, Sapporo, Hokkaido, Japan. sumi@sapmed.ac.jp
Kamo
Ken-Ichi
K
Ohtomo
Norio
N
Kobayashi
Nobumichi
N
D000465:Algorithms; D004196:Disease Outbreaks / Q000706:statistics & numerical data*; D006801:Humans; D015994:Incidence; D007564:Japan / Q000453:epidemiology; D008457:Measles / Q000453:epidemiology* / Q000821:virology; D008458:Measles Vaccine; D014611:Vaccination / Q000706:statistics & numerical data*
D008458:Measles Vaccine