What We Need to Do to Improve Our Immune System Despite the Use of Vaccination for COVID-19?

In our daily practice, we have heard more and more frequent reports of people infected with SARS-CoV-2, even having received one or two doses of vaccine for COVID-19. In the article written by Angel et al. (2021) entitled Association Between Vaccination with BNT162b2 and Incidence of Symptomatic and Asymptomatic SARS-CoV-2 Infections Among Health Care Workers, the authors concluded that the effectiveness of the vaccine in symptomatic SARS-CoV-2 infection reduced the incidence of this infection if you compared with unvaccinated health care worker. But the incidence was not reduced in the asymptomatic health care workers, where they found that vaccinated people were more likely to have SARS-CoV-2 if compared to unvaccinated people.