Two Coronavirus Vaccines ‘Produce Immune Response’
This file photo taken on April 29, 2020 shows an engineer taking samples of monkey kidney cells as he make tests on an experimental vaccine for the COVID-19 coronavirus inside the Cells Culture Room laboratory at the Sinovac Biotech facilities in Beijing. Two COVID-19 vaccine candidates have proven safe for humans and produced strong immune reactions among patients involved in two separate clinical trials, doctors said Monday.
The studies, published in The Lancet medical journal, constitute a major step on the road towards a COVID-19 vaccine that is effective and safe for widespread use. For its trial, the team at Oxford used a genetically modified strain of the common cold virus that infects chimpanzees. “The immune system has two ways of finding and attacking pathogens — antibody and T cell responses,” said Andrew Pollard, a member of the Oxford team.
Side effects in both trials were moderate but authors of the Chinese study said they needed to test the vaccine safety on older patients.
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