The World Health Organization warned that a coronavirus vaccine may not be ready for widespread use until the middle of 2021, contradicting assurances by President Donald Trump that a vaccine would be ready by November, CNBC reported.
WHO spokesperson Margaret Harris told a U.N. briefing in Geneva that none of the vaccines currently undergoing testing have been confirmed to be at least 50 percent effective, which is the minimum required for an inoculation to be considered a viable option.
“We are really not expecting to see widespread vaccination until the middle of next year,” she said. “This phase 3 must take longer because we need to see how truly protective the vaccine is and we also need to see how safe it is.”
“A lot of people have been vaccinated and what we don’t know is whether the vaccine works…at this stage we do not have the clear signal of whether or not it has the level of worthwhile efficacy and safety…,” she added.
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