{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T21:28:48Z","timestamp":1790630928136,"version":"4.1.0"},"reference-count":56,"publisher":"American Association for the Advancement of Science (AAAS)","issue":"656","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sci. Transl. Med."],"published-print":{"date-parts":[[2022,8,3]]},"abstract":"<jats:p>\n            <jats:italic>Streptococcus pneumoniae<\/jats:italic>\n            is a major cause of community-acquired pneumonia, bacteremia, and meningitis in older adults worldwide. Two pneumococcal vaccines containing\n            <jats:italic>S. pneumoniae<\/jats:italic>\n            capsular polysaccharides are in current use: the polysaccharide vaccine PPSV23 and the glycoconjugate vaccine PCV13. In clinical trials, both vaccines elicit similar opsonophagocytic killing activity. In contrast to polysaccharide vaccines, conjugate vaccines have shown consistent efficacy against nasopharyngeal carriage and noninvasive pneumonia overall and for some prevalent individual serotypes. Given these different clinical profiles, it is crucial to understand the differential immunological responses induced by these two vaccines. Here, we used a high-throughput systems serology approach to profile the biophysical and functional features of serum antibodies induced by PCV13 and PPSV23 at 1 month and 1 year. In comparison with PPSV23, PCV13 induced higher titers across antibody isotypes; more durable antibody responses across immunoglobulin G (IgG), IgA, and IgM isotypes; and increased antigenic breadth. Although titers measured in opsonophagocytic activity (OPA) assays were similar between the two groups, confirming what was observed in clinical studies, serum samples from PCV13 vaccinees could induce additional non-OPA antibody-dependent functions, including monocyte phagocytosis and natural killer cell activation. In a multivariate modeling approach, distinct humoral profiles were demonstrated in each arm. Together, these results demonstrate that the glycoconjugate PCV13 vaccine induces an antigenically broader, more durable, polyfunctional antibody response. These findings may help explain the increased protection against\n            <jats:italic>S. pneumoniae<\/jats:italic>\n            colonization and noninvasive pneumonia and the longer duration of protection against invasive pneumococcal disease, mediated by PCV13.\n          <\/jats:p>","DOI":"10.1126\/scitranslmed.abm4065","type":"journal-article","created":{"date-parts":[[2022,8,3]],"date-time":"2022-08-03T17:56:13Z","timestamp":1659549373000},"source":"Crossref","is-referenced-by-count":41,"title":["Polysaccharide and conjugate vaccines to\n            <i>Streptococcus pneumoniae<\/i>\n            generate distinct humoral responses"],"prefix":"10.1126","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4780-0606","authenticated-orcid":true,"given":"Leela R. L.","family":"Davies","sequence":"first","affiliation":[{"name":"Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA."},{"name":"Brigham and Women\u2019s Hospital, Boston, MA 02115, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3231-7726","authenticated-orcid":true,"given":"Deniz","family":"Cizmeci","sequence":"additional","affiliation":[{"name":"Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2152-1804","authenticated-orcid":true,"given":"Wenyue","family":"Guo","sequence":"additional","affiliation":[{"name":"Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Corinne","family":"Luedemann","sequence":"additional","affiliation":[{"name":"Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0932-7467","authenticated-orcid":true,"given":"Ronika","family":"Alexander-Parrish","sequence":"additional","affiliation":[{"name":"Pfizer Vaccines, Collegeville, PA 19426, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lindsay","family":"Grant","sequence":"additional","affiliation":[{"name":"Pfizer Vaccines, Collegeville, PA 19426, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Raul","family":"Isturiz","sequence":"additional","affiliation":[{"name":"Pfizer Vaccines, Collegeville, PA 19426, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0821-9202","authenticated-orcid":true,"given":"Christian","family":"Theilacker","sequence":"additional","affiliation":[{"name":"Pfizer Deutschland GmbH, Berlin, Germany."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1246-530X","authenticated-orcid":true,"given":"Luis","family":"Jodar","sequence":"additional","affiliation":[{"name":"Pfizer Vaccines, Collegeville, PA 19426, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bradford D.","family":"Gessner","sequence":"additional","affiliation":[{"name":"Pfizer Vaccines, Collegeville, PA 19426, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7680-9215","authenticated-orcid":true,"given":"Galit","family":"Alter","sequence":"additional","affiliation":[{"name":"Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"221","reference":[{"key":"e_1_3_3_2_2","first-page":"CD000422","article-title":"Vaccines for preventing pneumococcal infection in adults","volume":"2013","author":"Moberley S.","year":"2013","unstructured":"S. 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