• Pfizer says COVID-19 vaccine appears to be is 90% effective:

• Pfizer says COVID-19 vaccine appears to be is 90% effective: Pfizer said Monday that an early peek at the data on its coronavirus vaccine suggests the shots may be a surprisingly robust 90% effective at preventing COVID-19, putting the company on track to apply later this month for emergency-use approval from the Food and Drug Administration. Whenever any vaccine arrives, initial supplies will be scarce and rationed, with priority likely to be given to health care workers and others on the front lines.