One in five in Swedish study infected with Omicron despite being triple-vaccinated

STOCKHOLM, April 6 (Xinhua) -- One in five hospital staff was infected by the Omicron variant of COVID-19 soon after having had the third vaccine dose, according to a Swedish study.

Although the majority had only mild symptoms, the virus load was sufficiently high to transmit the virus for up to nine days, Swedish Television (SVT) reported on Wednesday.