This is what's known so far about a COVID-19 vaccine and the pandemic.
Around the world, politicians, drugmakers and regulators offer contradictory outlooks on when a COVID-19 vaccine will be ready. Much depends on what “ready” means and for what group of people. Some key questions around the timeline are:More than half a dozen drugmakers around the world are conducting advanced clinical trials, each with tens of thousands of participants, and several expect to know if their COVID-19 vaccines work and are safe by the end of this year.
Some experts are skeptical that the trials, which must study potential side effects on different types of people, can be completed that quickly. Peter Hotez, the dean of the National School of Tropical Medicine at Baylor College of Medicine in Texas, says that collecting enough data to prove a vaccine is safe for the world could take until mid-2021.Several drugmakers are building manufacturing capacity so they can begin production as soon as vaccines are approved by regulators.
First supplies late this year or early next would likely go to those in rich nations who are deemed by governments to work in essential industries or who are at greatest risk from the virus. That is likely to include people with other issues such as diabetes, healthcare workers and members of the military.
“I am worried that Operation Warp Speed vaccines will not reach developing countries any time soon,” Hotez said.
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