Protocol description First, when implementing SARS-CoV-2 vaccination for healthcare workers in health services that serve patients with COVID-19, some specific actions are required. Ideally, the real-time polymerase chain reaction test should be performed for all COVID-19 suspected cases before vaccination, as it is possible that the healthcare professional may have been previously infected with SARS-CoV-2 and appears asymptomatic. In the absence of prior testing, some professionals who receive the vaccination may be asymptomatic infected patients and may subsequently develop clinical […]