The chief scientist of the World Health Organization said today, Thursday, that AstraZeneca’s decision to stop testing its Corona virus vaccine after a participant’s illness is a “wake-up call”, but it should not discourage researchers.


“This is a call to attention to realize that there are fluctuations in clinical development and we must be prepared,” Sumaya Swaminathan said in a hypothetical media briefing from Geneva.
“This should not discourage us … these things happen