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Healthcare

Moderna vaccine shows 94% efficacy against severe COVID-19, says US pharma company

Updated : November 30, 2020 07:36 PM IST

Moderna vaccine shows 94 percent efficacy against severe COVID-19. The pharma giant plans to ask FDA for emergency clearance later in the day.

Moderna said on November 30 that it will request for emergency clearance of its COVID-19 vaccine from the US Food and Drug Administration as latest data suggests that the vaccine is over 94 percent effective in preventing COVID-19.

BREAKING: Moderna said it will request emergency clearance from the FDA for its coronavirus vaccine after data shows the vaccine is 94.1% effective in preventing Covid-19. https://t.co/kOrZOPTUGa
— Berkeley Lovelace (@BerkeleyJr) November 30, 2020

Pfizer had earlier requested FDA for emergency use of its vaccine. People in the US could get the first doses of Moderna's two-dose vaccine within a few weeks, CNBC reported.

Associated Press reported, that the US pharma giant would ask European regulators as well to allow emergency use of its COVID-19 vaccine as the results of the study confirm that the shots offer strong protection and has ramped up the race to begin limited vaccinations as the coronavirus pandemic worsens.

Multiple vaccine candidates must succeed for the world to stamp out the pandemic, which has been on the upswing in the U.S. and Europe. U.S. hospitals have been stretched to the limit as the nation has seen more than 160,000 new cases per day and more than 1,400 daily deaths. Since first emerging nearly a year ago in China, the virus has killed more than 1.4 million people worldwide.

Moderna is just behind Pfizer and its German partner BioNTech in seeking to begin vaccinations in the U.S. in December. Across the Atlantic, British regulators also are assessing the Pfizer shot and another from AstraZeneca.

Moderna created its shots with the U.S. National Institutes of Health and already had a hint they were working, but said it got the final needed results over the weekend that suggest the vaccine is more than 94% effective.

Of 196 COVID-19 cases so far in its huge U.S. study, 185 were trial participants who received the placebo and 11 who got the real vaccine. The only people who got severely ill 30 participants, including one who died had received dummy shots, said Dr. Tal Zaks, the Cambridge, Massachusetts, company's chief medical officer.

When he learned the results, I allowed myself to cry for the first time, Zaks told The Associated Press. We have already, just in the trial, have already saved lives. Just imagine the impact then multiplied to the people who can get this vaccine.

Moderna said the shots effectiveness and a good safety record so far with only temporary, flu-like side effects mean they meet requirements set by the U.S. Food and Drug Administration for emergency use before the final-stage testing is complete. The European Medicines Agency, Europes version of FDA, has signaled it also is open to faster, emergency clearance.

What comes next

The FDA has pledged that before it decides to roll out any COVID-19 vaccines, its scientific advisers will publicly debate whether theres enough evidence behind each candidate.

First up on Dec. 10, Pfizer and BioNTech will present data suggesting their vaccine candidate is 95% effective. Moderna said its turn at this science court is expected exactly a week later, on Dec. 17.

Rationing initial doses

If the FDA allows emergency use, Moderna expects to have 20 million doses ready for the U.S. by years end. Recipients will need two doses, so thats enough for 10 million people.

Pfizer expects to have 50 million doses globally in December. Half of them or enough for 12.5 million people are earmarked for the U.S.

This week, a different panel of U.S. experts, established by the Centers for Disease Control and Prevention, will meet to decide how initial supplies will be given out. They're expected to reserve scarce first doses for health care workers and, if the shots work well enough in the frail elderly, for residents of long-term care facilities. As more vaccine gradually becomes available in coming months, other essential workers and people at highest risk from the coronavirus would get in line. But enough for the general population isn't expected until at least spring.

Outside the U.S., Zaks said significant supplies from Moderna would be available later, in the first quarter of next year.

Obviously we are doing everything in our power to increase the capacity and accelerate the timelines, he said.

Both Moderna's and Pfizer's vaccines are made with the same technology, using a piece of genetic code for the spike protein that studs the virus. That messenger RNA, or mRNA, instructs the body to make some harmless spike protein, training immune cells to recognize it if the real virus eventually comes along.

ActraZeneca confusion

AstraZeneca last week announced confusing early results of its vaccine candidate from research in Britain and Brazil

That vaccine appears 62% effective when tested as originally intended, with recipients given two full doses. But because of a manufacturing error, a small number of volunteers got a lower first dose and AstraZeneca said in that group, the vaccine appeared to be 90% effective.

Experts say its unclear why the lower-dose approach would work better and that it may just be a statistical quirk.

A larger U.S. study of the AstraZeneca candidate still is underway that should eventually give the FDA a better picture of how well it works. The FDA has said any COVID-19 vaccine would have to be at least 50% effective.

Meanwhile Britains government will have to decide whether its U.K. data is sufficient for an early rollout there.

Still in the pipeline

Johnson & Johnson also is in final-stage testing in the U.S. and several other countries to see if its vaccine candidate could work with just one dose.

Both the J&J and AstraZeneca vaccines work by using harmless cold viruses to carry the spike protein gene into the body and prime the immune system.

The different technologies have ramifications for how easily different vaccines could be distributed globally. The AstraZeneca shots won't require freezer storage like the Pfizer and Moderna vaccines.

Candidates made with still other technologies are in late-stage testing, too. Another U.S. company, Novavax Inc., announced Monday that it has finished enrolling 15,000 people in a late-stage study in Britain and plans to begin recruiting even more volunteers for final testing in the U.S. and Mexico in the coming weeks.

Vaccines made by three Chinese companies and a Russian candidate also are being tested in thousands of people in countries around the world.

With inputs from AP.

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