SINGAPORE, May 16 (Xinhua) -- Singapore has detected its first community cases confirmed to be infected with the Omicron BA.4 and BA.5 subvariants of COVID-19, the Ministry of Health said in a press release Monday.
The ministry reported two local COVID-19 cases infected with the BA.4 variant, and one local case infected with the BA.5 variant. All cases are fully vaccinated, and had earlier received their booster dose. They were either asymptomatic or had mild symptoms such as fever, cough, runny nose and sore throat, and did not require hospitalization.