Pfizer, Merck, and Others See a Slowdown in Vaccine Sales, but Anticipate an Autumn Rebound

Biopharma Dive reported that the world's top four vaccine makers -- pharmaceutical giants Pfizer (NYSE:PFE), Merck (NYSE:MRK), Sanofi (NASDAQ:SNY) and GlaxoSmithKline (NYSE:GSK) -- have all experienced notable volume declines in the category.

Sanofi's vaccine sales fell 7% on a year-over-year basis in its most recently reported quarter. Its European peer GlaxoSmithKline suffered sales drops in all components of its vaccines unit, with sales of one of its top products (Shingrix, aimed at preventing shingles) sliding by 16% -- its steepest decline ever.