Gilead Sciences Inc.’s COVID-19 drug remdesivir during 2021 overtook AbbVie Inc.’s 20-year-old arthritis drug Humira as the medicine that U.S. hospitals spent the most on, according to Vizient Inc., a purchasing group used by about half the nation’s hospitals.

Pfizer is expanding the company’s presence in infectious diseases with the acquisition of San Diego-based Amplyx Pharmaceuticals and the lead antifungal compound Fosmanogepix (APX001).

Pfizer Inc. announced that the company will organize into three businesses: Innovative Medicines, Established Medicines, and Consumer Healthcare.