Biotech Values

[DewDiligence]

Quiz (low difficulty): Prevnar 13 is now PFE’s biggest-selling on-patent* drug and is enjoying explosive growth, increasing worldwide sales in 2011 by 50%. However, in 4Q11, specifically, Prevnar 13 sales declined 25% YoY in the US market. What accounts for this disparity?

*Lipitor still has higher sales despite its being off-patent everywhere.