Pfizer Revenue Boosted by Covid-19 Drugs (infographic)
Pfizer reported its fourth-quarter and full-year results on Tuesday
Merck warns against Pfizer Covid-19 pill
Merck's Vice President said it might create problems for some patients taking drugs for other medical conditions
COVID-19 Vaccine Boosts Pfizer’s Revenue Guidance (infographic)
The drugmaker stands to make a sizeable profit from its vaccine breakthrough