Local skin reaction to the AZD1222 vaccine in a patient who survived COVID-19.

Since the beginning of the COVID-19 pandemic strenuous efforts to create a herd immunity against this deadly disease have been made. As a matter of fact, multiple vaccines harnessing different strategies have been developed: virus-like vaccines, protein subunit vaccines, RNA-based vaccines, inactivated vaccines, protein subunit vaccines and vector vaccines have been created by the international scientific community.