Moderna Phase- 1 results show COVID19 vaccine safe, improve immune response

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Moderna Inc’s experimental vaccine for COVID-19 showed it was safe and provoked immune responses in all 45 healthy volunteers in an ongoing early-stage study, U.S. researchers reported on Tuesday.

Volunteers who got two doses of the vaccine had high levels of virus-killing antibodies that exceeded the average levels seen in people who had recovered from COVID-19, the team reported in the New England Journal of Medicine.

No study volunteers experienced a serious side effect, but more than half reported mild or moderate reactions such as fatigue, headache, chills, muscle aches or pain at the injection site. These were more likely to occur after the second dose and in people who got the highest dose.

Moderna was the first to start human testing of a vaccine for the novel coronavirus on March 16, 66 days after the genetic sequence of the virus was released.

Moderna, the biotech company ranked among a select group of companies to receive significant funding as part of Operation Warp Speed, the U.S. government program created to accelerate COVID-19 vaccine development. The U.S. government is supporting Moderna’s vaccine with nearly half a billion dollars.

Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases (NIAID), whose researchers developed Moderna’s vaccine candidate, called the results “good news,” noting that the study found no serious adverse events and the vaccine produced “reasonably high” levels of virus-killing or neutralizing antibodies.

Moderna’s mRNA-1273 is an mRNA vaccine against SARS-CoV-2 encoding for a prefusion stabilized form of the Spike (S) protein that mimic the outer surface of the coronavirus, which the body recognizes as a foreign invader, and mounts an immune response against. It was selected by Moderna in collaboration with investigators from Vaccine Research Center (VRC) at the National Institute of Allergy and Infectious Diseases (NIAID), a part of the NIH.

On May 6, the U.S. Food and Drug Administration (FDA) completed its review of the Company’s Investigational New Drug (IND) application for mRNA-1273 allowing it to proceed to a Phase 2 study, On May 12, the FDA granted mRNA-1273 Fast Track designation.

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