The 23-valent pneumococcal vaccine is a 23-valent pneumococcal polysaccharide vaccine with good immunoprotection against childhood pneumonia. The 23-valent Pneumococcal Polysaccharide Vaccine (PVPV) covers 23 common pneumococcal serotypes and is effective in protecting against pneumococcal pneumonia with a prevalence rate of about 90%, as well as pneumococcal bacteremia, which is often caused by drug-resistant pneumococcal bacteria. The 23-valent pneumococcal polysaccharide vaccine has good immunoprotection against pneumococcal pneumonia and pneumococcal bacteremia, and can be used for vaccination of people aged 2 years and older who are at high risk for pneumococcal disease. Slight fever and diarrhea may occur after vaccination with 23-valent pneumococcal vaccine, which is normal, and you need to observe for half an hour after vaccination before leaving the hospital. If there is persistent fever that does not go away or severe vomiting or diarrhea, you should go to the hospital in time.