Humoral response to a third injection of BNT162b2 vaccine in patients on maintenance haemodialysis.

Background: Humoral response against sudden acute respiratory syndrome coronavirus 2 (SARS-CoV-2) after two doses of BNT162b2 (Pfizer-BioNTech) has been proven to be less intense in maintenance dialysis patients as compared with healthy subjects, leading the French authorities to recommend a third injection in this population. Here we investigated the response to the third injection in two cohorts of haemodialysis (HD) patients.

Methods: Data from two prospective observational cohorts were collected.