Pfizer Says First Tests Show Its Covid-19 Vaccine Is 90% Effective | CNN

ANKARA, TURKEY - OCTOBER 27: A health care worker holds an injection syringe of the phase 3 vaccine trial, developed against the novel coronavirus (COVID-19) pandemic by the US Pfizer and German BioNTech company, at the Ankara University Ibni Sina Hospital in Ankara, Turkey on October 27, 2020. This vaccine candidate, within the scope of phase 3 studies, was injected to volunteers in Ankara University Ibni Sina Hospital.

(Photo by Dogukan Keskinkilic / Anadolu Agency via Getty Images)

(CNN) -

Pharmaceutical Pfizer said Monday that an early look at the data for its coronavirus vaccine shows that it is more than 90% effective, much better than expected if the trend continues.

Coronavirus vaccine