GENEVA: A COVID-19 vaccine may be rolled out by March 2021 to the most vulnerable, which could fundamentally change the course of the pandemic, a senior World Health Organization (WHO) official said on Monday.

Bruce Aylward also told the WHO's annual ministerial assembly that interim results announced earlier in the day from Pfizer Inc's phase-three vaccine trials were "very positive". Pfizer Inc PFE.N said on Monday its experimental COVID-19 vaccine was more than 90% effective.

COVID-19 vaccine could fundamentally change pandemic direction: WHO

Bruce Aylward also told the WHO's annual ministerial assembly that interim results announced earlier in the day from Pfizer Inc's phase-three vaccine trials were "very positive". Pfizer Inc PFE.N said on Monday its experimental COVID-19 vaccine was more than 90% effective.

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COVID-19 vaccine could fundamentally change pandemic direction: WHO

​​Bruce Aylward also told the WHO's annual ministerial assembly that interim results announced earlier in the day from Pfizer Inc's phase-three vaccine trials were "very positive". Pfizer Inc PFE.N said on Monday its experimental COVID-19 vaccine was more than 90% effective.

Read More News on

Bruce Aylward also told the WHO's annual ministerial assembly that interim results announced earlier in the day from Pfizer Inc's phase-three vaccine trials were "very positive". Pfizer Inc PFE.N said on Monday its experimental COVID-19 vaccine was more than 90% effective.