The w135 fimbriae polysaccharide vaccine is necessary for families who are in a position to pay for it out-of-pocket.
The most important invasive infections among the serotypes of the brain flu bacterium are caused by types A, B, C, Y, W135 and X. The w135 brain flu vaccine, fully known as the ACYW135 tetravalent polysaccharide vaccine, is the brain flu vaccine with the widest coverage of serotypes in China at present. However, because the polysaccharide vaccine has a poor immunization effect in infants and young children within 2 years of age and the protection strength is limited, it is recommended that they be vaccinated after the age of 3 years old.
The best vaccine regimen for the prevention of epidemic encephalitis is AC-conjugate-Hib vaccine or AC-conjugate vaccine at 2, 3, and 4 months of age respectively, followed by 4-valent polysaccharide vaccine at 3 years of age and 6 years of age respectively, all of which are self-funded vaccines. It is recommended that people in need should go to regular vaccination organizations for vaccination.