Leading influenza vaccine manufacturer in China 2019, by lot release volume
flu vaccines. Sinopharm's Changchun Institute of Biological Products and Sanofi Pasteur were among the major influenza suppliers in the Chinese market.
Hualan Biological Engineering has been the top influenza vaccine manufacturer in China. In 2019, the biotech company produced a total of about 13 million doses of trivalent and quadrivalent