Japan
In a follow-up on the measles outbreak in Japan, the Japan Institute for Health Security now reports 362 measles cases as of April 22.
This is a 336 percent increase in cases compared to the same period in 2025 when 83 cases were reported.
Tokyo reports the most cases with 153 cases, followed by Kanagawa (36) and Kagoshima (34).
Japan tops 13,000 syphilis cases for the 4th consecutive year
Taiwan
The Taiwan Centers for Disease Control (CDC) announced today one new confirmed imported case of measles.
The patient is a man in his 30s from central Taiwan who traveled to Japan in early April this year. After returning to Taiwan, he developed symptoms such as fever and cough on April 16 and sought medical attention multiple times. He developed a rash on April 20 and sought medical attention again. He was subsequently reported and tested positive. Health authorities have identified 274 close contacts and are expected to monitor them until May 12.
The CDC explained that Taiwan has a total of 9 measles cases this year, ranging in age from under 1 year old to over 50 years old. Two of these cases were locally transmitted, and the other 7 were imported cases, with one case each from Vietnam, Malaysia, the United States, India, Indonesia, Kyrgyzstan, and Japan.
If you like the reporting on Outbreak News Today, please consider a paid subscription for $5/month or $30 a year. Help support the cause of this niche journalism. It is appreciated.
The Centers for Disease Control (CDC) reminds the public that measles is highly contagious and can be transmitted through the air. Vaccination is the most effective way to prevent measles. The CDC advises the public to ensure their young children receive the measles, mumps, and rubella (MMR) vaccine on schedule. Because the immunity generated by vaccination may decrease over time, adults born in 1966 and later are advised to consult a doctor at a travel medicine clinic 2-4 weeks before their trip to receive the MMR vaccine at their own expense if they plan to travel to measles-endemic areas. Pregnant women and infants under 1 year old are at high risk of infection and should avoid traveling to endemic areas. If traveling with infants aged 6 months to under 1 year, pregnant women can consult a health center or travel medicine clinic before departure to receive one dose of the MMR vaccine at their own expense. During travel, individuals should pay attention to personal hygiene, wash hands frequently, avoid touching their mouth and nose, and wear masks when necessary to reduce the risk of infection.
The Taiwan Centers for Disease Control (CDC) urges anyone with a travel history to measles-endemic areas who develops symptoms such as fever, rash, rhinitis, cough, or conjunctivitis within three weeks of returning to Taiwan. Please wear a mask, seek medical attention immediately, and proactively inform your doctor of your travel and exposure history.