One thousand one hundred and nineteen cases of severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) Omicron variant cases have been diagnosed at the Institut Hospitalo‐Universitaire Méditerranée Infection, Marseille, France, between November 28, 2021, and December 31, 2021. Among the 825 patients with known vaccination status, 383 (46.4%) were vaccinated, of whom 91.9% had received at least two doses of the vaccine. Interestingly, 26.3% of cases developed SARS‐CoV‐2 infection within 21 days following the last dose of vaccine suggesting possible early production of anti‐SARS‐CoV‐2 facilitating antibodies. Twenty‐one patients have been hospitalized, one patient required intensive care, and another patient who received a vaccine booster dose died.
Characteristics of the first 1119 SARS‐CoV‐2 Omicron variant cases, in Marseille, France, November−December 2021