国立感染症研究所

  In Japan, Infectious Disease Surveillance Center (IDSC) of National Institute of Infectious Diseases (NIID) is notified the results of isolation/detection of infectious agents from prefectural and municipal public health institutes (PHIs). Their information are based on the laboratory identification done by PHIs for the specimens collected at sentinel clinics/ hospitals under the National Epidemiological Surveillance of Infectious Diseases (NESID), occasionally at non-sentinel sites and at health centers.

 

 

Figure 1.Weekly reports of rubella virus isolation/detection, week 1/2012-week 38/2016

Figure 2.Isolation/detection of rubella virus by prefecture, 2012 - 2016

Figure 3.Age distribution and gender of rubella virus isolation/detection, 2012 - 2016

Figure 4.Age distribution of rubella virus isolation/detection, 2012 - 2016

 

 

 

  In 2013, the reported number of rubella virus isolation/detection was largely increased (Fig.1).

 

In 2013 (week 1 to 52), the information of rubella virus isolated/detected from 984 cases in 32 of 47 prefectures was reported. Among 457 strains genotyped, the genotype 2B from 412 cases was dominant (90%). The genotype 1E from 42 cases follows (9.2%). The genotype 1a (vaccine type) was reported from 3 MR vaccinees (Fig.2). 

 In 2012, PHIs in 24 prefectures reported the information of 233 rubella virus isolation/detection.  Out of 170 strains genotyped, 134 belong to genotype 2B (79%), the genotype 1E from 35 cases (21%), and genotype 1a (0.6%) from a MR vaccinee (Fig.2). 

 

Rubella viruses were predominantly detected from 908 males especially in their 20s to 40s. Among 302 females, the viruses were most frequently detected
from 15 to 29 years

 (Fig.3).>

 

Infectious Agents Surveillance Report, Infectious Disease Surveillance Center,

National Institute of Infectious Diseases

Copyright 1998 National Institute of Infectious Diseases, Japan

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