Sri Lanka has approved the Oxford-AstraZeneca vaccine to be used against COovid-19 amid warnings from doctors that frontline health workers should be quickly vaccinated to avoid health system collapsing, the Associated Press (AP) reported. Minister for Pharmaceutical Production and Regulation Channa Jayasumana said the British vaccine has been approved for emergency use, the first to be approved in Sri Lanka, while several other candidates are in the pipeline at the National Medicines Regulatory Authority.