Heterologous Vaccination: Epidemiologist Dr. Wanderson Oliveira highlights the benefits of this strategy for Brazil

The epidemiologist Wanderson Oliveira spoke with the Impulso team to clarify what heterologous vaccination is all about and how this strategy can be fundamental to accelerating the pace of vaccination in Brazil.

Heterologous vaccination consists of the application of the second dose of one vaccine after the application of the first dose of another. It is already taking place in some countries like Canada and Spain. Preliminary results from international studies already indicate that the use of Pfizer as a second dose in a heterologous regimen increases the cellular immunity responses obtained after the initial dose of AstraZeneca.

According to Dr. Wanderson, the application of a combination of vaccines can speed up vaccination and benefit, for example, pregnant women. In Brazil, about 50 thousand pregnant women received the first dose of AstraZeneca, but this vaccine is no longer recommended to the group. The application of the second dose of Pfizer would be important to give greater protection to the group of pregnant women, says the epidemiologist.

The combination of vaccines can help Brazil to accelerate the immunization process. Therefore, it is essential to be aware of the evidence from international scientific research in order to adopt the vaccine combination strategy quickly.