N Miyashita1, H Fukano, K Yoshida, Y Niki, T Matsushima. 1. Division of Respiratory Diseases, Department of Medicine, Kawasaki Medical School, Kurashika City, Okayama, Japan. nao@med.kawasaki-m.ac.jp
Abstract
AIM: To clarify the endemic and epidemic status of Chlamydia pneumoniae in Japan, the incidence of anti-C pneumoniae antibody was evaluated over a period of 10 years. METHOD: Serum samples were collected from 4756 healthy individuals aged 6 months to 88 years (2488 male and 2268 female individuals) between 1991 and 2000. The antibody titre was determined by a microimmunofluorescence test. RESULTS: After stratification by age and sex in each year, distinct peaks with prevalences of 73.3% and 73.0% were noted in 1993 and 1999, respectively. The lowest prevalence rate was seen in 1996 (59.0%). The epidemic cycle has been estimated to be almost six years in this geographical area. CONCLUSIONS: Chlamydia pneumoniae infection is highly endemic in Japan, as it is in Western countries, and there is a year to year variability. Long term studies in Japan are needed to clarify the epidemic occurrence of C pneumoniae infection.
AIM: To clarify the endemic and epidemic status of Chlamydia pneumoniae in Japan, the incidence of anti-C pneumoniae antibody was evaluated over a period of 10 years. METHOD: Serum samples were collected from 4756 healthy individuals aged 6 months to 88 years (2488 male and 2268 female individuals) between 1991 and 2000. The antibody titre was determined by a microimmunofluorescence test. RESULTS: After stratification by age and sex in each year, distinct peaks with prevalences of 73.3% and 73.0% were noted in 1993 and 1999, respectively. The lowest prevalence rate was seen in 1996 (59.0%). The epidemic cycle has been estimated to be almost six years in this geographical area. CONCLUSIONS:Chlamydia pneumoniae infection is highly endemic in Japan, as it is in Western countries, and there is a year to year variability. Long term studies in Japan are needed to clarify the epidemic occurrence of C pneumoniae infection.
Authors: Chi-Chao Chan; Defen Shen; Manabu Mochizuki; John A Gonzales; Hunter K L Yuen; Yan Guex-Crosier; Phuc Lehoang Journal: Trans Am Ophthalmol Soc Date: 2006
Authors: Nubia Caroline Costa Almeida; Maria Alice Freitas Queiroz; Sandra Souza Lima; Igor Brasil Costa; Marco Antonio Ayin Fossa; Antonio Carlos R Vallinoto; Marluísa de Oliveira Guimarães Ishak; Ricardo Ishak Journal: Front Immunol Date: 2019-02-05 Impact factor: 7.561