Counterfeit versions of Pfizer's COVID-19 vaccine have been identified in Mexico and Poland, a spokesperson for the pharmaceutical giant confirmed to ABC News. "We are cognizant that in this type of ...

Bayer's Monsanto has sued Pfizer, BioNTech and Moderna for allegedly misusing its messenger RNA technology in COVID vaccines.

In this file photo, a person walks past the Pfizer Headquarters building in the Manhattan borough of New York City, Dec. 7, 2020. automation Pfizer announced early Thursday morning that it has ...

NEW YORK -- A course of pills developed by Pfizer can slash the risk of being hospitalized or dying from COVID-19 by 89% if taken within three days of developing symptoms, according to results ...