Taiwan Reports Local Measles Cluster From Imported Case, Quarantines 491 Contacts

Taiwan's Centers for Disease Control (CDC) announced a new local measles cluster linked to an imported case, bringing the total confirmed infections to two. The initial case involved a foreign woman in her 30s who contracted measles during her visit to Taiwan. She subsequently infected her male friend in his 20s, with whom she was staying.

Health officials have identified and are monitoring 491 close contacts for any signs of infection, with follow-ups scheduled until June 16. The index case, the foreign tourist, developed symptoms like fever, cough, and rash shortly after arriving in Taiwan. Despite initial self-treatment, her condition worsened, leading her to seek medical attention. After being diagnosed and confirmed for measles, she was isolated at her residence and has since completed her infectious period.

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Measles is an extremely contagious disease that can spread through the air, and patients are contagious before and after the appearance of a rash.

The second confirmed case, a Taiwanese man, was identified as a close contact of the initial patient. He began showing symptoms including cough, headache, fever, and rash in late May. Due to his contact with the confirmed case, he was immediately placed under health surveillance by the local health bureau, which arranged for his medical evaluation and testing, ultimately confirming his measles infection.

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About 5% to 10% of patients may develop complications, including otitis media, pneumonia, and encephalitis.

Taiwanese health authorities emphasized the highly contagious nature of measles, which spreads through airborne transmission. Infected individuals can transmit the virus before and after the appearance of a rash. Complications, such as middle ear infections, pneumonia, and encephalitis, occur in 5% to 10% of cases. Infants, immunocompromised individuals, cancer patients, and adults are at higher risk for severe illness, which can be fatal.

As of this year, Taiwan has recorded 11 confirmed measles cases, including 3 domestic infections and 8 imported ones. The imported cases originated from countries including Vietnam, Malaysia, the United States, India, Indonesia, Kyrgyzstan, Japan, and Thailand. Globally, measles outbreaks are escalating, with Japan reporting 511 cases this year, more than double last year's total, and Bangladesh experiencing over 70,000 cases and 585 deaths since March.

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Globally, measles outbreaks are continuing to heat up. Japan has already accumulated 511 measles cases this year, far exceeding last year's total of 265.