Since the introduction of new generation pertussis vaccines, resurgence of pertussis is observed in many developed countries. Former whole-cell pertussis vaccines (wP) are able to protect against disease and transmission but have been replaced in several industrialized countries because of their reactogenicity and adverse effects. Current acellular pertussis vaccines (aP), made of purified proteins of Bordetella pertussis, are efficient at preventing disease but fail to induce long-term protection from infection. While the systemic and mucosal T cell immunity induced by the two types of vaccines has been well described, much less is known concerning B cell responses. Taking advantage of an inducible AID fate-mapping mouse model, we compared effector and memory B cells induced by the two classes of vaccines and showed that a stronger and broader memory B cell and plasma cell response is achieved by a wP prime. We also observed that homologous or heterologous vaccine combinations that include at least one wP administration, even as a booster dose, are sufficient to induce this broad effector response, thus highlighting its dominant imprint on the B cell profile. Finally, we describe the settlement of memory B cell populations in the lung following subcutaneous wP prime vaccination.


Viviana Valeri, Akhésa Sochon, Clara Cousu, Pascal Chappert, Damiana Lecoeuche, Pascal Blanc, Jean-Claude Weill, Claude-Agnès Reynaud


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