Singapore airport tightens measures after COVID-19 outbreak

Singapore's airport said on Monday it was stepping up measures to keep out the coronavirus, including further segregating arrivals and about 14,000 workers into different risk zones, after it became the country's largest active COVID-19 cluster. The Changi airport cluster, which involves over 100 cases, may have initially spread through a worker who helped an infected family arriving in the country, according to authorities. Some of the cases included the B.1.617 variant first detected in India.