Group 1 - The company Zhifei Biological has recently obtained invention patent certificates from the National Intellectual Property Administration of the People's Republic of China for two vaccines: "Preparation Method of a Bivalent Shigella Combined Vaccine" and "COVID-19 and Influenza Combined Vaccine and Its Preparation Method" [1] Group 2 - The announcement highlights the company's ongoing innovation in vaccine development, which may enhance its competitive position in the biopharmaceutical industry [1] - The patents could potentially lead to new revenue streams and market opportunities for Zhifei Biological in the context of public health needs [1]