优威克

**优威克** is Zhifei's marketed 23-valent pneumococcal polysaccharide vaccine for prevention of infections caused by vaccine-included *Streptococcus pneumoniae* serotypes in people aged 2 years and older. Developed and manufactured by Beijing Zhifei Lvzhu Biopharmaceutical, it contains purified capsular polysaccharide antigens from 23 pneumococcal serotypes and induces serotype-specific humoral antibody responses. It is a non-conjugated polysaccharide vaccine and is not expected to protect against pneumococcal serotypes not represented in the formulation. Zhifei lists 优威克 as its proprietary 23-valent pneumococcal polysaccharide vaccine product, and the product received Chinese marketing authorization in 2023. ([zhifeishengwu.com](https://www.zhifeishengwu.com/zh_CN/pro/27.html))

Brand names

优威克

Other names

23价肺炎球菌多糖疫苗23-valent pneumococcal polysaccharide vaccineYouweike