According to researchers from Quebec, Illinois, and Texas, to prevent the spread of COVID-19 indoors, the two metres physical distancing guideline is not enough without masks.
Bangladesh's health experts warn of imminent vaccine shortages just as the country should be stepping up jabs and as more contagious virus variants are beginning to be detected.
Japan is set to issue a third state of emergency for Tokyo and three western urban prefectures amid scepticism it will be enough to curb a rapid coronavirus resurgence ahead of the Olympics in July.
France will impose new entry restrictions on travellers from India to fight a contagious coronavirus variant spreading in that country, an official said on Wednesday.
