Covid-19 vaccine data were less likely to succeed. I've never been happier to be wrong. Pfizer Inc. and BioNTech SE announced Monday that their vaccine candidate prevented over 90% of infections in an early look at results from their 44,000-person clinical trial.It's fantastic news and a historic scientific accomplishment.
Not only do we have the first effective vaccine, but the data also looks robust. Instead of evaluating the shot at the first possible moment, Pfizer waited for more data, which gives weight to the impressive results.There are still unknowns about the vaccine, and with limited supplies available until next year and two shots needed to complete treatment, it won't end a rampant pandemic overnight.