In a press release (and not a paper in a peer-reviewed journal) based on a preliminary outside review of data from its phase 3 trial, Pfizer says its Covid-19 vaccine was more than 90% effective in preventing the disease.
The company said that the analysis found that the vaccine was more than 90 percent effective in preventing the disease among trial volunteers who had no evidence of prior coronavirus infection. If the results hold up, that level of protection would put it on par with highly effective childhood vaccines for diseases such as measles. No serious safety concerns have been observed, the company said.
I really hope this analysis holds up when more data from the study is released:
The data released by Pfizer Monday was delivered in a news release, not a peer-reviewed medical journal. It is not conclusive evidence that the vaccine is safe and effective, and the initial finding of more than 90 percent efficacy could change as the trial goes on.
The world, and the United States, could really really use some good news like this about the pandemic.
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