Pfizer Inc. discovers, develops, manufactures, markets, distributes, and sells biopharmaceutical products worldwide. It offers medicines and vaccines in various therapeutic areas, including cardiovascular metabolic, migraine, women's health, infectious diseases with unmet medical needs, COVID-19 prevention and treatment, and potential future mRNA and antiviral products. In addition, the company is involved in the contract manufacturing business. It serves wholesalers, retailers, hospitals, clinics, government agencies, pharmacies, individual provider offices, retail pharmacies, and integrated delivery systems, as well as disease control and prevention centers.