All infected patients are reported to have developed symptoms of COVID-19. But the disease was easy: no one needed hospitalization. The patients were people between the ages of 25 and 39. Previously, none of the group had any covid disease. Six patients received the full course of vaccinations with Pfizer / BioNTech, five of them received even a third dose of the same vaccine, and one was re-vaccinated with Moderna vaccine. Another person received the first dose of Vaxzevria vaccine and then received two doses of Pfizer / BioNTech.
Five people tested positive for coronavirus. But everyone developed symptoms. The researchers concluded that full booster vaccination is a good protection against severe coronavirus infection. However, omicron as a whole can bypass the immunity generated by mRNA vaccines.
It is worth noting that very few people participated in the study.