COVID-19 vaccine may require two doses | Instant News


June 4, 2020 – When and if the world gets a coronavirus vaccine, it will probably need two vaccinations given about a month apart, health officials say.

Director of the National Institute of Health Dr. Francis Collins said CNN on Thursday that a one-dose vaccine would be ideal because of its cost and also because some people would not show up for a second injection.

“Certainly there is a possibility that one or more of these vaccines might require two injections to get a full immune response,” he said. “That is one of the reasons for conducting experiments and research trials to find that out. If what is needed to provide full protection for all of this is two doses, we want to find out. “

The first shot will outperform the immune system, help it recognize the virus, and the second injection will strengthen the immune response, USA Today reported Thursday.

Barry Bloom, an immunologist and professor of public health at Harvard T.H. The Chan School of Public Health in Boston, says around 100 vaccines are in various stages of testing.

“As far as I know, with a set of exceptions, all frontline vaccine developers are considering two injections,” Bloom said. “The only exception is Merck, which last week pushed two vaccines, each of which is expected to be a single-use vaccine.”

L.J. Tan from the Immunization Action Coalition informed USA Today two doses will be given about one month apart. The scientists also said the coronavirus vaccine might require booster injections in the following years.

From drug companies competing to develop the coronavirus vaccine, scientists with Moderna in the US and Oxford University in the UK has begun clinical trials in humans.

Source

CNN.com: “Coronavirus vaccine may require two doses, said the head of the NIH.”
USA Today: “The coronavirus vaccine requires you to get two injections. This is why.”
WebMD. “Moderna Begins COVID-19 Phase Two Vaccine Study.” “Oxford Begins Human Clinical Trials for Vaccines.”


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