Dengue vaccine should not be taken by anyone who has never had the disease, says Anvisa
Although the suspicion presented by the laboratory is still not conclusive, Anvisa's recommendation is that the vaccine not be taken by people who have never had dengue. According to the information presented by Anvisa, which need a more complete analysis of the studies, some individuals presented more severe forms of the disease after the application, this occurred in people who had not had previous contact with the virus. possibility exists in the case of seronegative people (who never came into contact with the virus) to be vaccinated and subsequently exposed to the dengue virus, that is, after the bite of an infected mosquito. Thus, they could develop a more acute form of dengue if they become infected after receiving the drug.
However, the agency points out that the vaccine itself would not trigger a serious disease or induce the onset of the disease. spontaneous In order to do this, it is necessary to contact the dengue virus later with the bite of an infected mosquito. For this reason, the vaccine package leaflet will be updated while Anvisa evaluates the complete data of the studies, which will still be presented by the manufacturer.
The Sanofi vaccine, called Dengvaxia, is the only vaccine approved in Brazil. The product is indicated for immunization against the four subtypes of the virus. For people who have had dengue, Anvisa evaluates that the benefit of using the vaccine remains favorable.
Through the communiqué Anvisa clarified that "this risk had not been identified in the studies presented for the registration of the vaccine in the population for the In addition, they reported that prior to registration, the effects of immunization were studied in more than 40,000 people worldwide, and that the research followed the standards set by World Health Organization (WHO).
Some people feel fear of needle, either to take an injection or even and to do a blood collection exam, for example. When dread sets in the discomfort goes far beyond the discomfort of the bite. However, this internal system is not always working properly. The excess fear, the phobia, the dread of something truly existent or even of that which does not offer real fear (it is as if it were an irrational sensation with the extreme necessity of protection) is intended to defend, receive and protect .
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