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T Cell Immunity and the Quest for Protective Vaccines Against Infection

Overview
Journal Microorganisms
Specialty Microbiology
Date 2020 Dec 9
PMID 33291260
Citations 16
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Abstract

is a wide-spread human pathogen, and one of the top causative agents of nosocomial infections. The prevalence of antibiotic-resistant strains, which are associated with higher mortality and morbidity rates than antibiotic-susceptible strains, is increasing around the world. Vaccination would be an effective preventive measure against infection, but to date, every vaccine developed has failed in clinical trials, despite inducing robust antibody responses. These results suggest that induction of humoral immunity does not suffice to confer protection against the infection. Evidence from studies in murine models and in patients with immune defects support a role of T cell-mediated immunity in protective responses against . Here, we review the current understanding of the mechanisms underlying adaptive immunity to infections and discuss these findings in light of the recent vaccine trial failures. We make the case for the need to develop anti- vaccines that can specifically elicit robust and durable protective memory T cell subsets.

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