SINGAPORE -- Singapore is urging vigilance over COVID-19 after reporting one case of a migrant worker who tested positive well over a month after he was fully vaccinated.
The Singaporean case was reported on Sunday, mirroring a post-two-dose case in Japan that emerged the same day. Infections after two rounds of inoculations are not unheard of, but officials say the developments underscore the need to remain cautious as immunizations progress.
