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Seroconversion was obtained in 29.5% of the patients. Longer time from last anti\u2010CD20\u00a0moAb (&gt;6\u00a0months) and diagnosis of aggressive lymphoma compared to other, incurable B\u2010NHLs were associated with increased seroconversion rates (47.8% vs.10.5%, <jats:italic>p<\/jats:italic>\u00a0=\u00a00.019 and 50% vs. 17.9%, <jats:italic>p<\/jats:italic>\u00a0=\u00a00.025 respectively). Thus, seronegative patients with B\u2010NHL that completed anti\u2010CD20 therapy more than 6\u00a0months prior to the booster have greater chances to achieve seroconversion.<\/jats:p>","DOI":"10.1111\/bjh.18029","type":"journal-article","created":{"date-parts":[[2022,1,25]],"date-time":"2022-01-25T09:04:12Z","timestamp":1643101452000},"page":"1329-1333","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["BNT162b2 mRNA COVID\u201019 vaccine booster induces seroconversion in patients with B\u2010cell non\u2010Hodgkin lymphoma who failed to respond to two prior vaccine doses"],"prefix":"10.1111","volume":"196","author":[{"given":"Irit","family":"Avivi","sequence":"first","affiliation":[{"name":"Department of Hematology Tel Aviv Sourasky Medical Center  Tel\u2010Aviv Israel"},{"name":"Sackler Faculty of Medicine Tel Aviv University  Tel\u2010Aviv 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