Taiwan is experiencing a significant health alert as imported cases from Vietnam drive a major rise in measles infections. The Taiwan Centers for Disease Control (CDC) confirmed 36 cases this year. This marks the highest count in six years. Authorities continue to monitor the situation closely.
Of the total cases, 24 came from abroad. Imported cases from Vietnam accounted for all of these. The remaining 12 cases resulted from local transmission. Officials already traced these local cases to earlier clusters. Fortunately, all related clusters have now passed their observation periods. No additional spread followed.
Last week, two men in their 30s returned from Vietnam. They later developed symptoms four and nine days after arrival. The CDC quickly classified both as imported cases from Vietnam. These men live in northern and central Taiwan.
Health officials swiftly placed both under home isolation. For the northern case, contact tracers identified 128 people. These individuals will remain under observation through June 4. For the central case, 165 contacts require monitoring until June 6.
In response, Taiwan’s CDC expanded its vaccine recommendation. Previously, only those born after 1981 qualified. Now, everyone born in or after 1966 should consider the MMR vaccine. This includes people traveling to outbreak areas or working around international visitors.
The MMR vaccine offers the best protection against measles. Experts say it provides over 95% immunity for up to 20 years. However, immunity often fades in adults aged 20 to 40 who only received childhood doses.
Although Taiwan began routine MMR shots in 1981, officials now urge booster shots for adults. A national survey from 2019–2020 revealed a clear immunity gap. Those born between 1961 and 1965 had a 97% seropositivity rate. Meanwhile, younger adults showed lower immunity, ranging from 93% to just 42%.
Currently, two self-paid MMR vaccine brands remain available. Around 21,000 doses are in stock. Another 10,000 doses should become available soon after inspection. The CDC assures the public that supply remains stable.
Health experts strongly recommend vaccination at least two weeks before travel. This allows time for immunity to build. The government emphasizes that those aged 20 to 59 traveling to Vietnam should take special precautions. Medical professionals also encourage individuals unsure of their immunity to seek advice.
Measles spreads through the air or by contact with throat and nasal fluids. Infected individuals can transmit the virus even before symptoms appear. Common symptoms include fever, cough, runny nose, conjunctivitis, and a red rash.While most people recover within 18 days, measles can cause serious complications. With imported cases from Vietnam continuing to rise, Taiwan’s CDC urges the public to act quickly and stay protected.
