Covid vaccines expected to protect against new strains of the virus, U.S. doctor says

FAN Editor

SINGAPORE — Existing vaccines for Covid-19 will be effective in fighting off infection from new strains of the coronavirus, a U.S. doctor told CNBC this week.

His comments came after the U.K. on Saturday said it identified a new mutation of the virus that can spread more quickly than previous variants.

Countries including Italy, Germany, Canada and Israel have barred flights from the U.K. following reports of the new strain.

Vin Gupta, an affiliate assistant professor from the University of Washington’s Institute for Health Metrics and Evaluation, said he’s confident that the current vaccines will protect against different strains of Covid.

“There is a strong belief here that the vaccine, as it exists today … will have effectiveness in warding off infection from this new strain in England, in addition to the old strain that we’ve been contending with for months now,” said Gupta.

That’s because at the genetic level, the new strain is likely to be “very similar” to prior strains, he told CNBC’s “Squawk Box Asia” on Monday.

The effectiveness of these vaccines in producing antibodies that can really attack and kill Covid-19 is extraordinary

Vin Gupta

Affiliate assistant professor

He added that the vaccines elicit a “really strong response in the body in terms of producing antibodies.”

Vaccines produced by PfizerBioNTech and Moderna have reported efficacy rates of more than 90%. The U.K. was the first country in the world to authorize and roll out the vaccine developed by American pharmaceutical giant Pfizer and its German partner BioNTech for emergency use. The U.S. and Canada are among a handful of countries that have also approved the usage of the vaccine for emergencies.

“The effectiveness of these vaccines in producing antibodies that can really attack and kill Covid-19 is extraordinary,” he said. “I don’t expect these minor changes at the genetic level … to affect the vaccines’ performance in the near term.”

Close up image of the Pfizer-BioNTech Covid-19 vaccination vial.

Hugh Hastings | Getty Images News | Getty Images

However, future versions of the vaccine may need to take new virus strains into account, the same way flu vaccines are updated, Gupta said.

“I do think that this might impact our future facing work, but it’s not going to impact the near term,” he said. “It will not impact the current vaccines’ effectiveness in ending the pandemic.”

Dr. Vivek Murthy, who has been tapped by President-elect Joe Biden to be the next U.S. Surgeon General, made similar comments on NBC’s “Meet the Press” on Sunday.

“There’s no reason to believe that the vaccines that have been developed will not be effective against [the new U.K. strain] as well,” he said, adding that there’s no evidence of the new variant being more deadly.

“The bottom line is if you are at home and you are hearing this news, it does not change what we do in terms of precautions as individuals that can reduce the spread of this virus,” said Murthy, who was also previously surgeon general during the Obama administration. “It turns out that masking, keeping physical distance and washing our hands … these are still the pillars of preventing Covid transmission.”

— CNBC’s Ryan Browne contributed to this report.

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