New COVID Vaccine Tests “90% Effective” in Initial Trials

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Pharmaceutical giant Pfizer said today that their vaccine against Covid-19 was strongly effective, exceeding expectations with results.

The vaccine is the first to be tested in the United States to generate late-stage data.

The company said an early analysis of the results showed that individuals who received two injections of the vaccine three weeks apart experienced more than 90% fewer cases of symptomatic Covid-19 than those who received a placebo.

For months, researchers have cautioned that a vaccine might only be 60% or 70% effective.

The Phase 3 study is ongoing and additional data will be made available.