Safety of Vaccines Used for Routine Immunization of US Children: A Systematic Review. -There is strong evidence that MMR vaccine is not associated with autism. -Strength of evidence was high for measles/mumps/rubella (MMR) vaccine and febrile seizures Pediatrics. 2014 Aug;134(2):325-337. Epub 2014 Jul 1. Maglione MA1, Das L2, Raaen L2, Smith A2, Chari R2, Newberry S2, Shanman R2, Perry T2, Goetz MB3, Gidengil C4. ncbi.nlm.nih.gov/pubmed/25086160 CONCLUSIONS: We found evidence that some vaccines are associated with serious adverse events (AEs); however, these events are extremely rare and must be weighed against the protective benefits that vaccines provide. BACKGROUND: Concerns about vaccine safety have led some parents to decline recommended vaccination of their children, leading to the resurgence of diseases. Reassurance of vaccine safety remains critical for population health. This study systematically reviewed the literature on the safety of routine vaccines recommended for children in the United States. METHODS: Data sources included PubMed, Advisory Committee on Immunization Practices statements, package inserts, existing reviews, manufacturer information packets, and the 2011 Institute of Medicine consensus report on vaccine safety. We augmented the Institute of Medicine report with more recent studies and increased the scope to include more vaccines. Only studies that used active surveillance and had a control mechanism were included. Formulations not used in the United States were excluded. Adverse events and patient and vaccine characteristics were abstracted. Adverse event collection and reporting was evaluated by using the McHarm scale. We were unable to pool results. Strength of evidence was rated as high, moderate, low, or insufficient. RESULTS: Of 20478 titles identified, 67 were included. Strength of evidence was high for measles/mumps/rubella (MMR) vaccine and febrile seizures; the #varicella vaccine was associated with complications in immunodeficient individuals. There is strong evidence that #MMR vaccine is not associated with autism. There is moderate evidence that #rotavirus vaccines are associated with intussusception. Limitations of the study include that the majority of studies did not investigate or identify risk factors for AEs; and the severity of AEs was inconsistently reported. Copyright © 2014 by the American Academy of Pediatrics. KEYWORDS: #evidence-based #medicine; #infectious #disease; #vaccine/#immunization
Posted on: Sun, 03 Aug 2014 17:37:49 +0000
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