Moderna Inc said on Wednesday it has enough data for a first interim analysis of the late-stage trial of its experimental COVID-19 vaccine, which should help determine the vaccine’s efficacy.
Moderna said the information is being prepared for submission to the trial’s independent data safety monitoring board, which will look at the results and make a recommendation. It did not say when it plans to release the efficacy data.
The company said in a news release that it has seen a significant increase in the number of COVID-19 cases among trial participants as infection rates have surged around the United States.
Due to the spike in cases, the analysis will cover substantially more than 53 infections, which had been the targeted trigger point for the first analysis.
The company said the trial remains blinded, so neither it nor study investigators know which participants received the vaccine or a placebo. The vaccine will be deemed a success if the overwhelming majority of those infected had received a placebo, once the monitoring board looks at the early results.
Earlier in the day, Dr. Anthony Fauci, the top U.S. infectious disease expert, said Moderna could have the data from anywhere between “a couple of days” to “a little more than a week.”
A high degree of effectiveness would make sense as it is “almost identical” to Pfizer Inc’s PFE.N experimental vaccine, Fauci, director of the U.S. National Institute of Allergy and Infectious Diseases, said at a conference organized by the Financial Times.
“It may not be 95%, it might be 90%, or 96%, or 89%, but it is going to be up there,” he said.
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