“More investigation is still needed to determine the origin of the pandemic,” said the 18 scientists, including Ravindra Gupta, a clinical microbiologist at the University of Cambridge, and Jesse Bloom, who studies the evolution of viruses at the Fred Hutchinson Cancer Research Center.
“Theories of accidental release from a lab and zoonotic spillover both remain viable,” the scientists including David Relman, professor of microbiology at Stanford, said in a letter to the journal Science.
“In a handful of rich countries, which bought up the majority of the vaccine supply, lower risk groups are now being vaccinated”, he said.
“I understand why some countries want to vaccinate their children and adolescents, but right now I urge them to reconsider and to instead donate vaccines to COVAX.”
Tedros reported that vaccine supply in low and lower-middle income countries has not been sufficient to even immunize health and care workers.
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