Extraordinary information (measles)

　It is an infection caused by the measles virus. It is very infectious and almost 100% of people who do not have immunity become infected. Symptoms include fever, cough, runny nose, conjunctival congestion (catal symptoms), white spots in the oral cavity (cup Rick spots), and rash. The rash is the back of the ear → Neck → Face → Trunk → Upper limb → It appears in the order of the lower limbs. If pneumonia or encephalitis is combined, it may become severe and care must be taken. Other complications may develop subacute sclerosing panencephalitis a few years after the disease, especially during the schoolchild period.
　In recent years, measles has been spread in Japan due to imported cases from overseas.

　Transmission routes are airborne infections (infected just by being in the same space), droplet infections (cough, sneezing, etc.), and contact infections (by touching the mucous membranes of the mouth, nose, eyes, etc. with hands touching infected person droplets).
　From 1 day before fever to 3 days after fever, there is infectiousness to the surroundings. The incubation period from contact with measles patients to onset is 10 to 12 days (up to 21 days).
　The most effective preventive method is to get a vaccine and get immunity in advance.
　ⅠYears ： 12-24 months after birth
　ⅡYears ： 1 year before elementary school (over 5 to under 7 years old)
　In addition, patients who have not been vaccinated or have low antibody titers may be able to prevent the onset by receiving emergency vaccinations within 3 days after contact.

• Measles epidemic information (March 21, 2025) (PDF: 295KB) (R7.3.21)

• Measles epidemic information (March 12, 2025) (PDF: 292KB) (R7.3.12)
• Measles epidemic information No. 8 (October 3, 2019) (PDF: 484KB) (R source. 10.3)
• Measles epidemic information No. 7 (July 4, 2019) (PDF: 524KB) (R original. 7.4)
• Measles epidemic information No. 6 (June 27, 2019) (PDF: 441KB) (R source. 6.27)
• Measles epidemic information No. 5 (June 20, 2019) (PDF: 414KB) (R source. 6.20)
• Measles epidemic information No. 4 (June 13, 2019) (PDF: 416KB) (R source. 6.13)
• Measles epidemic information No. 3 (June 6, 2019) (PDF: 398KB) (R source. 6.6)
• Measles epidemic information No. 2 (May 30, 2019) (PDF: 397KB) (R source. 5.30)
• Measles epidemic information No. 1 (May 23, 2019) (PDF: 395KB) (R source. 5.23)
  Distribution of measles virus genes in the world (extracted from WHO website / as of May 2019) (PDF: 325KB)
• Outbreak situation of measles (April 24, 2014) (PDF: 315KB) (H26.4.24)
• Outbreak situation of measles (February 20, 2014) (PDF: 308KB) (H26.2.20)
• About measles epidemic-H20.8.5 version-(PDF: 20KB) (H20.8.5 publication, H20.8.13 update)
• About measles epidemic-H20.4.4 version-(PDF: 23KB) (H20.4.4 publication)
• About measles epidemic-H20.3.13 version-(PDF: 22KB) (H20.3.13 publication)
• About measles epidemic-H20.2.26 version-(PDF: 26KB) (H20.2.26 published)
• About measles epidemic-H20.2.15 version-(PDF: 22KB) (H20.2.15 publication)
• About measles epidemic-H20.1.31 version-(PDF: 21KB) (H20.1.31 publication)
• 29 weeks of 2007 (from July 16 to July 22) (PDF: 49KB) (H19.7.30)
• 28 weeks of 2007 (from July 9 to July 15) (PDF: 44KB) (H19.7.20)
• 27 weeks 2007 (from July 2 to July 8) (PDF: 46KB) (H19.7.13)
• 26 weeks 2007 (from June 25 to July 1) (PDF: 51KB) (H19.7.6)
• 25 weeks of 2007 (from June 18 to June 24) (PDF: 50KB) (published on H19.6.29)
• 24 weeks 2007 (from June 11 to June 17) (PDF: 51KB) (published on H19.6.22)
• 23 weeks 2007 (from June 4 to June 10) (PDF: 44KB) (H19.6.15)
• 22 weeks of 2007 (from May 28 to June 3) (PDF: 37KB) (H19.6.8)
• 21 weeks of 2007 (from May 21 to May 27) (PDF: 34KB) (H19.6.1)
• 20 weeks of 2007 (from May 14 to May 20) (PDF: 32KB) (published on H19.5.24)
• 19 weeks 2007 (from May 7 to May 13) (PDF: 34KB) (H19.5.18)
• 18 weeks 2007 (from April 30 to May 6) (PDF: 26KB) (H19.5.11)
• 16 weeks 2007 (from April 16 to April 22) (PDF: 26KB) (published on H19.4.27)
• 15 weeks of 2007 (from April 9 to April 15) (PDF: 20KB) (H19.4.20)


• [Measles, careless is prohibited! ] (PDF: 25KB) (Published in H19.10.12)