Moderna Covid-19 vaccine generates immune response
Early data show Moderna Covid-19 vaccine generates immune response
Acandidate vaccine for Covid-19 developed by the drug maker Moderna appears to generate an immune response similar to the response seen in people who have been infected by the virus and recovered, the company said Monday.
In a Phase 1 trial, eight patients who received two doses of the vaccine at the lowest and middle doses tested — 25 and 100 micrograms — developed neutralizing antibodies to the virus at levels similar to people who had recovered from infection, the company said in a statement.
The data were limited and from only a small number of participants in the trial, led by the National Institute of Allergy and Infectious Diseases. But they are still likely to be seen as encouraging. Research aimed to develop a vaccine against SARS, a related virus responsible for a 2002-2003 outbreak, showed that neutralizing antibodies are pivotal for achieving protection.
Moderna is developing the vaccine in conjunction with the NIAID’s Vaccine Research Center.
“These interim Phase 1 data, while early, demonstrate that vaccination with mRNA-1273 elicits an immune response of the magnitude caused by natural infection starting with a dose as low as 25 μg,” said Tal Zaks, Moderna’s chief medical officer.
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