Supporting the scientific study of sharks, skates and rays since 1983.
Only one of the vaccines, PCV13, is considered safe for children under the age of 2, This vaccine is important because infants and very young children are at higher risk for several dangerous infections, including pneumonia and bacterial meningitis.
PPSV is used in selected adults and children â¥2 years of age but not in infants or toddlers <2 years of age since polysaccharide antigens are poorly immunogenic in this age group. âPneumococcal conjugate vaccine (PCV) was initially marketed in the United States in 2000 as a 7-valent vaccine, PCV7 (Prevnar 7).