Pfizer and BioNTechs COVID-19 vaccine was 85 percent effective after a single dose in a peer-reviewed study. 18 2020 at 724 am. Moderna And Pfizer Are Reinventing Vaccines Starting With Covid Wsj The Wall Street Journal 23 mins Pfizer Moderna and Johnson Johnson vaccines provide good protection against the virus that causes Covid. Pfizer wall street journal . Pfizers Covid-19 vaccine is fast to make but complex stepslike enveloping the mRNA with fat needed for its transportcan create production bottlenecks. The Wall Street Journal reported Feb. Shes an alumna of Boston University and has reported for the Wall Street Journal Science and. Pfizer CEO says one may be needed in 8-12 months. Fake coronavirus vaccines are popping up with the first two cases in Mexico and Poland pharmaceutical giant Pfizer said on Wednesday. Pfizer says it may know whether its vaccine works by the end of October and that it could be ready to apply for emergency. PFE stock price news histo...