MCV4 is a vaccine used for the prevention of N. meningitides (Lta). 

Our MCV4 candidate is a potential first-in-class vaccine in China. Meningococcal polysaccharide vaccines are primarily used in China. Developed countries have replaced polysaccharide products with MCV4 products. As of the Latest Practicable Date, there was no approved MCV4 in China.