The requirement follows a measles outbreak that infected 87 people in Singapore between January and April 2026. Health officials recorded the first local transmission in eight years.
Accepted proof includes vaccination certificates, digital health records or a letter from a licensed physician confirming immunity. Children under six months are exempt if travelling with vaccinated parents.
Travellers without documentation may receive an on-arrival vaccine at Changi Airport for SGD 45 or face quarantine until immunity is confirmed. The Ministry has deployed 40 additional medical staff at terminals.
Airlines including Singapore Airlines and Scoot have updated their online check-in systems to flag non-compliant passengers 48 hours before departure.
WHO data shows global measles cases rose 45 percent last year, prompting several Asian nations to review entry rules. Singapore’s policy is among the strictest.
Health experts expect the measure to remain in place until regional case numbers fall below 10 per million for three consecutive months.