The pneumonia 13-valent vaccine is known as 13-valent pneumococcal conjugate vaccine, and the third dose is given to babies at 6 months of age. The vaccine is effective in preventing pneumonia, otitis media, meningitis, septicemia and bacteremia caused by Streptococcus pneumoniae and is mainly used for children over 6 weeks of age. The vaccine usually requires four doses, with three basic immunizations at 2, 4 and 6 months of age and a booster at 12-15 months of age, so the third dose is given at 6 months of age. Just because you have received the 13-valent pneumococcal conjugate vaccine does not mean that you will not get pneumonia again. Since there are nearly 100 pneumococcal serotypes and the vaccine only protects against the more aggressive ones, and since pneumococci are not the only ones that cause pneumonia, but also other bacteria, viruses, chlamydia, mycoplasma, etc., it is important to protect children from pneumonia on a daily basis. After vaccination, children need to keep warm to avoid catching a cold. They should also consume nutritious food to strengthen their resistance and drink more water to speed up their metabolism and relieve discomfort.