Heterologous vaccination, or with different vaccines: the answers to doubts and fears

The message rings sweet to the ears of almost a million Italians – especially teachers, school staff, law enforcement and over 60s – who during the spring of 2021 had started the vaccination campaign against Covid-19 by receiving one or both doses of the drug developed by AstraZeneca.

For them, already called or about to receive the “booster” with one of the two mRna vaccines, there are no health risks.