With the vaccine already being distributed in several countries, there are those who question the effectiveness of this because it was very fast to be developed. In fact, science is also very developed as is technology (there are no miracles!).
With the appearance of a new strain, BioNTech has already made sure that it has a vaccine in 6 weeks.
RNA technology simplifies the design of a new vaccine
Ugur Sahin, from the German laboratory BioNTech, recently revealed that messenger RNA technology allows "to start directly designing a vaccine that completely mimics the new mutation". In addition, the scientist also mentions that "We are technically capable of delivering a new vaccine in six weeks".
Following the recommendation to approve the conditional marketing authorization for the vaccine, the EMA executive director said that there was "no evidence" that the Pfizer / BioNTech vaccine was not effective against this new strain, but that new information continues to arrive. regarding the new coronavirus, so the European regulator will continue its assessment.
The Directorate-General for Health (DGS) said that the first vaccines against the new coronavirus should maintain at least some effectiveness against the new most contagious variant from the United Kingdom, which has not yet been found in Portugal.
Portugal and DGS, in conjunction with the Ricardo Jorge Institute, are closely monitoring, both from the point of view of public health and epidemiological surveillance, and this strain is not yet detected in the data currently known
The DGS official indicated that the respiratory samples being analyzed were collected in November.
This strain is more easily transmitted and does not seem to increase the hospitalization rate or lethality for now, Valter Fonseca was cautious, indicating that there is "a significant uncertainty about the strain and its immunological behavior".
Vaccines work by more than one mechanism. They have redundant mechanisms, produce various types of antibodies and it is possible that in some mutations detected, vaccines will maintain at least part of their effectiveness
This uncertainty is valid for the Pfizer / BioNTech vaccine, the first to arrive in Portugal and for those that follow, he stressed, noting that it is expected that it will maintain at least “some of its effectiveness” for the new strain.