A 13-valent pneumonia vaccine costs about$800 and requires standardized vaccination, usually for children six months to one and a half years old. The vaccine is standardized and requires four doses to complete the entire immunization process. The vaccine mainly prevents relatively serious respiratory diseases caused by Streptococcus pneumoniae infection, such as severe pneumonia. It also prevents complications, such as meningitis, otitis media, sepsis, etc. The age requirement for vaccination in mainland China is relatively young and the duration of vaccination is relatively short.