19
views
0
recommends
+1 Recommend
1 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Adverse events of vaccines and the consequences of non-vaccination: a critical review Translated title: Eventos adversos de vacinas e as consequências da não vacinação: uma análise crítica

      review-article

      Read this article at

      ScienceOpenPublisherPMC
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          ABSTRACT

          OBJECTIVE:

          To analyze the risks related to vaccines and the impacts of non-vaccination on the world population.

          METHODS:

          This is a narrative review that has considered information present in the bibliographic databases NCBI-PubMed, Medline, Lilacs, and Scientific Electronic Library Online (SciELO), between November 2015 and November 2016. For the analysis of outbreaks caused by non-vaccination, we considered the work published between 2010 and 2016.

          RESULTS:

          We have described the main components of the vaccines offered by the Brazilian public health system and the adverse events associated with these elements. Except for local inflammatory reactions and rare events, such as exacerbation of autoimmune diseases and allergies, no causal relationship has been demonstrated between the administration of vaccines and autism, Alzheimer's disease, or narcolepsy. On the other hand, the lack of information and the dissemination of non-scientific information have contributed to the reemergence of infectious diseases in several countries in the world and they jeopardize global plans for the eradication of these diseases.

          CONCLUSIONS:

          The population should be well informed about the benefits of vaccination and health professionals should assume the role of disseminating truthful information with scientific support on the subject, as an ethical and professional commitment to society.

          RESUMO

          OBJETIVO:

          Analisar os riscos relacionados às vacinas e os impactos da não vacinação para a população mundial.

          MÉTODOS:

          Revisão narrativa que considerou informações contidas nas bases de dados bibliográficos NCBI-PubMed, Medline, Lilacs e Scientific Electronic Library Online (SciELO), no período compreendido entre novembro de 2015 e novembro de 2016. Para a análise de surtos ocasionados pela não vacinação foram considerados os trabalhos publicados entre 2010 e 2016.

          RESULTADOS:

          Foram descritos os principais componentes das vacinas oferecidas pelo sistema público de saúde brasileiro e eventos adversos associados a esses elementos. Com exceção de reações inflamatórias locais e efeitos raros como exacerbação de doenças autoimunes e alergias, não foi demonstrada relação causal entre a administração de vacinas e autismo, mal de Alzheimer ou narcolepsia. Por outro lado, a falta de informações e a divulgação de informações não científicas têm contribuído para a reemergência de doenças infecciosas em diversos países no mundo e põe em risco planos globais para a erradicação de doenças infecciosas.

          CONCLUSÕES:

          A população deve estar bem informada quanto aos benefícios da vacinação e os profissionais da saúde devem assumir o papel de divulgar informações verídicas e com respaldo científico sobre o tema, como compromisso ético e profissional junto à sociedade.

          Related collections

          Most cited references106

          • Record: found
          • Abstract: found
          • Article: not found

          Intussusception among infants given an oral rotavirus vaccine.

          Intussusception is a form of intestinal obstruction in which a segment of the bowel prolapses into a more distal segment. Our investigation began on May 27, 1999, after nine cases of infants who had intussusception after receiving the tetravalent rhesus-human reassortant rotavirus vaccine (RRV-TV) were reported to the Vaccine Adverse Event Reporting System. In 19 states, we assessed the potential association between RRV-TV and intussusception among infants at least 1 but less than 12 months old. Infants hospitalized between November 1, 1998, and June 30, 1999, were identified by systematic reviews of medical and radiologic records. Each infant with intussusception was matched according to age with four healthy control infants who had been born at the same hospital as the infant with intussusception. Information on vaccinations was verified by the provider. Data were analyzed for 429 infants with intussusception and 1763 matched controls in a case-control analysis as well as for 432 infants with intussusception in a case-series analysis. Seventy-four of the 429 infants with intussusception (17.2 percent) and 226 of the 1763 controls (12.8 percent) had received RRV-TV (P=0.02). An increased risk of intussusception 3 to 14 days after the first dose of RRV-TV was found in the case-control analysis (adjusted odds ratio, 21.7; 95 percent confidence interval, 9.6 to 48.9). In the case-series analysis, the incidence-rate ratio was 29.4 (95 percent confidence interval, 16.1 to 53.6) for days 3 through 14 after a first dose. There was also an increase in the risk of intussusception after the second dose of the vaccine, but it was smaller than the increase in risk after the first dose. Assuming full implementation of a national program of vaccination with RRV-TV, we estimated that 1 case of intussusception attributable to the vaccine would occur for every 4670 to 9474 infants vaccinated. The strong association between vaccination with RRV-TV and intussusception among otherwise healthy infants supports the existence of a causal relation. Rotavirus vaccines with an improved safety profile are urgently needed.
            Bookmark
            • Record: found
            • Abstract: found
            • Article: found
            Is Open Access

            AS03 Adjuvanted AH1N1 Vaccine Associated with an Abrupt Increase in the Incidence of Childhood Narcolepsy in Finland

            Background Narcolepsy is a chronic sleep disorder with strong genetic predisposition causing excessive daytime sleepiness and cataplexy. A sudden increase in childhood narcolepsy was observed in Finland soon after pandemic influenza epidemic and vaccination with ASO3-adjuvanted Pandemrix. No increase was observed in other age groups. Methods Retrospective cohort study. From January 1, 2009 to December 31, 2010 we retrospectively followed the cohort of all children living in Finland and born from January 1991 through December 2005. Vaccination data of the whole population was obtained from primary health care databases. All new cases with assigned ICD-10 code of narcolepsy were identified and the medical records reviewed by two experts to classify the diagnosis of narcolepsy according to the Brighton collaboration criteria. Onset of narcolepsy was defined as the first documented contact to health care because of excessive daytime sleepiness. The primary follow-up period was restricted to August 15, 2010, the day before media attention on post-vaccination narcolepsy started. Findings Vaccination coverage in the cohort was 75%. Of the 67 confirmed cases of narcolepsy, 46 vaccinated and 7 unvaccinated were included in the primary analysis. The incidence of narcolepsy was 9.0 in the vaccinated as compared to 0.7/100,000 person years in the unvaccinated individuals, the rate ratio being 12.7 (95% confidence interval 6.1–30.8). The vaccine-attributable risk of developing narcolepsy was 1∶16,000 vaccinated 4 to 19-year-olds (95% confidence interval 1∶13,000–1∶21,000). Conclusions Pandemrix vaccine contributed to the onset of narcolepsy among those 4 to 19 years old during the pandemic influenza in 2009–2010 in Finland. Further studies are needed to determine whether this observation exists in other populations and to elucidate potential underlying immunological mechanism. The role of the adjuvant in particular warrants further research before drawing conclusions about the use of adjuvanted pandemic vaccines in the future.
              Bookmark
              • Record: found
              • Abstract: found
              • Article: not found

              Benefits and risks of the Sanofi-Pasteur dengue vaccine: Modeling optimal deployment.

              The first approved dengue vaccine has now been licensed in six countries. We propose that this live attenuated vaccine acts like a silent natural infection in priming or boosting host immunity. A transmission dynamic model incorporating this hypothesis fits recent clinical trial data well and predicts that vaccine effectiveness depends strongly on the age group vaccinated and local transmission intensity. Vaccination in low-transmission settings may increase the incidence of more severe "secondary-like" infection and, thus, the numbers hospitalized for dengue. In moderate transmission settings, we predict positive impacts overall but increased risks of hospitalization with dengue disease for individuals who are vaccinated when seronegative. However, in high-transmission settings, vaccination benefits both the whole population and seronegative recipients. Our analysis can help inform policy-makers evaluating this and other candidate dengue vaccines.
                Bookmark

                Author and article information

                Journal
                Rev Saude Publica
                Rev Saude Publica
                rsp
                Revista de Saúde Pública
                Faculdade de Saúde Pública da Universidade de São Paulo
                0034-8910
                1518-8787
                2018
                4 April 2018
                : 52
                : 40
                Affiliations
                [I ]Universidade de São Paulo. Instituto de Ciências Biomédicas. Departamento de Microbiologia. São Paulo, SP, Brasil
                [II ]Instituto Butantan. Centro de Biotecnologia. São Paulo, SP, Brasil
                [III ]Instituto Adolfo Lutz. Centro de Imunologia. São Paulo, SP, Brasil
                Author notes
                Correspondence: Luana Raposo de Melo Moraes Aps, Av. Prof. Lineu Prestes, 1374, Cidade Universitária, 05508-000 São Paulo, SP, Brasil, E-mail: lu.mmoraes@ 123456usp.br

                Authors’ Contribution: All authors have participated in the design and planning of the study, collection, analysis, and interpretation of the data, and approval of the final version. LRMMA, MAFP, and LCSF have carried out the preparation and revision of the study and assume public responsibility for its content. LRMMA and MAFP have contributed equally to this work.

                Conflict of Interest: The authors declare no conflict of interest.

                Article
                00504
                10.11606/S1518-8787.2018052000384
                5933943
                29668817
                0a8c2c53-f2ba-4404-9c12-5942500c8503

                This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 29 November 2016
                : 28 April 2017
                Page count
                Figures: 0, Tables: 6, Equations: 0, References: 104, Pages: 13
                Categories
                Review

                vaccination, utilization,vaccination, adverse effects,vaccines,immunization,adjuvants, immunologic, contraindications,risk factors,communicable disease control,vacinação, utilização,vacinação, efeitos adversos,vacinas,imunização,adjuvantes imunológicos, contraindicações,fatores de risco,controle de doenças transmissíveis

                Comments

                Comment on this article