Isolation/detection of influenza virus in Japan, week 19/2012-week 37/2012 (as of September 27, 2012)

Print
Details
  In Japan, prefectural and municipal public health institutes (PHIs) report isolation/detection of infectious agents from specimens collected by sentinel clinics and hospitals under the National Epidemiological Surveillance of Infectious Diseases, other medical institutions and health centers (Reference figure).
Figure 1. Weekly reports of influenza virus isolation/detection, week 19/2012-week 37/2012
Figure 2. Isolation/detection of influenza virus by prefecture, week 19/2012-week 37/2012
Figure 3. Weekly isolation/detection of influenza virus by prefecture, weeks 33-37/2012
  After week 19/2012, a small number of influenza virus isolations/detections was reported (Fig. 1).  In okinawa Prefecture, local outbreak of influenza continued in summer and detection of AH3 was dominant from week 26/2012.

  From week 19 (May 7-13) to week 37 (September 10-16) of 2012, isolations/detections of AH1pdm09 from 10 cases in 4 prefectures, AH3 from 120 cases in 26 prefectures, B/Victoria lineage from 28 cases in 14 prefectures, B/Yamagata lineage from 21 cases in 13 prefectures and B/lineage not determined from 39 cases in 10 prefectures were reported (Fig. 2). 
From week 33 (August 13-19) to week 37 (September 10-16) of 2012  (as of September 27, 2012)

  During five weeks from week 33 to week 37 of 2012, isolations/detections of AH3 from 39 cases in 11 prefectures, B/lineage not determined from one case in Okinawa Prefecture were reported (Fig. 3).

[Reference figure] Weekly cases of influenza and isolation/detection of influenza viruses from week 36 of 2008 to week 41 of 2011
Isolation/detection of influenza virus in Japan, from week 36 (September 5-11) of 2011 to week 25 (June 18-24) of 2011 (as of July 19, 2012)
Isolation/detection of influenza virus in Japan, from week 36 (September 6-12) of 2010 to week 19 (May 9-15) of 2011 (as of September 6, 2011)
Isolation/detection of influenza virus in Japan, from week 19 (May 4-10) of 2009 to week 19 (May 10-16) of 2010 (as of May 13, 2010)
Infectious Agents Surveillance Report, Infectious Disease Surveillance Center, 
National Institute of Infectious Diseases
 
Go to Flash report of influenza virus in Japan
Copyright 1998 National Institute of Infectious Diseases, Japan