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Archivist
Conjugate pneumococcal vaccine
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Children are able to respond to protein antigens before they can respond to polysaccharide antigens. The response to pneumococcal polysaccharide vaccine is poor before the age of 2 years and some older children with recurrent respiratory infection also respond poorly to the 23-valent pneumococcal polysaccharide vaccine. Protein conjugate vaccines have been shown to induce significant antibody responses in young infants and now researchers in New Orleans, USA (Ricardo U …