Reduction of health problems of health care workers related to COVID-19 among individuals vaccinated with BCG; verified by clinical evaluation and laboratory exames during 180 days.;Reduction of positivity for COVID-19 through serological; molecular tests and / or clinical evaluation among individuals vaccinated with BCG.

Reduction of health problems of health care workers related to COVID-19 among individuals vaccinated with BCG; verified by clinical evaluation and laboratory exames during 180 days.;Reduction of positivity for COVID-19 through serological; molecular tests and / or clinical evaluation among individuals vaccinated with BCG.