Humoral anti-S immunity in individuals vaccinated with SARS-CoV-2 vaccines. Five hundred and one people over 40 who received the vaccine from AstraZeneca (n = 95), Gamaleya Research Institute, Sputnik V (n = 86), Moderna (n = 63), the Pfizer-BioNTech (119), Sinovac (n = 55) or Sinopharm (n = 83) were included in this work. Anti-S antibodies were quantified in the peripheral blood at 3 to 7 weeks post-vaccination (A) Results are expressed in IU/mL. Along with dot plots, median with interquartile range are shown. (B) Percentage of positivity over the threshold of 1700 BAU/mL (corresponding to 1748 IU/mL) for anti-S antibodies is shown.