The additional dose of Covid vaccine should be administered at least 28 days after the last. This was established by the circular of the Ministry of Health. Additional dose means an additional dose to complete the primary vaccination course, to achieve an adequate level of immune response. It starts with transplant patients. The ‘booster’ dose, unlike the additional one, will be administered after 6 months defining the strategy in favor of further groups including fragile and higher risk for occupational exposure.
The circular of the ministry on the third additional dose of Covid vaccine therefore distinguishes between ‘additional’ doses and so-called ‘booster’ doses. By additional dose, we read, “we mean an additional dose of vaccine to complete the primary vaccination cycle, administered in order to achieve an adequate level of immune response”. By “booster” dose, on the other hand, “we mean a booster dose after the completion of the primary vaccination cycle, after a certain time interval, administered in order to maintain or restore an adequate level of immune response over time, in particular in populations characterized by a high risk, due to conditions of fragility associated with the development of serious or even fatal disease, or due to occupational exposure “.
The booster dose should be administered at least six months after the last dose. At the moment, according to the indications of the CTS, the circular specifies, “the administration of the additional dose is considered a priority in transplanted and immunocompromised subjects”. Without prejudice to the priority of achieving high vaccination coverage with the completion of currently authorized courses, “the strategy of administering a” booster “dose of m-RNA vaccine (Comirnaty by BioNTech / Pfizer and Spikevax by Moderna) will be defined. in favor of further target groups, starting with those mentioned above, taking into account the scientific evidence and the evolution of the epidemiological scenario “. HANDLE
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