The World Health Organization said there is no reason to stop using AstraZeneca’s COVID-19 vaccine after several countries suspended the rollout over blood clot fears while some nations begin warning of another virus wave.

The WHO, which said its vaccines advisory committee was examining the safety data coming in, stressed that no causal link has been established between the AstraZeneca vaccine and clotting.

“AstraZeneca is an excellent vaccine, as are the other vaccines that are being used. Yes, we should continue using the AstraZeneca vaccine. Any concerns over safety must be investigated”, - WHO spokeswoman Margaret Harris told reporters in Geneva.

UK-based AstraZeneca insisted its jab was safe, adding there is “no evidence” of higher blood clot risks from it.