Inpharma 1655 - 13 Sep 2008 ■ A new US Centers for Disease Control and Prevention (CDC) study * found no link between the measles-mumps-rubella (MMR) vaccine and autism. However, the US National Autism Association (NAA) says this study does nothing to dispel the growing public concern over a vaccine-autism connection and raises several questions concerning design and methodology. For a number of years, parents have claimed that MMR triggered their child’s subsequent GI disease and autism. In support of this view, the NAA points to a 2002 published study where the majority of autistic children were found to have measles in their intestines; among the children examined, there was a clear temporal link between MMR exposure and regression. The NAA believes that the CDC’s attempt to replicate this 2002 study "fell far short of proving the safety of the MMR vaccine". * The study will be published in the online journal Public Library of Science in September. National Autism Association. CDC Misses Target With Flawed MMR/Autism Study. Media Release : 3 Sep 2008. Available from: URL: http:// www.nationalautism.org 809092852 » Editorial comment: Public concern over a possible link between MMR vaccination and autism continues despite a number of studies that have failed to show a link between the vaccine and autism [see Reactions 851, p3; 800861202, 1004, p2; 809035031, 1019, p2; 800973824, and 1189, p5; 801101235]. Notably, the majority of authors of a 1998 study that raised the possibility of such a link later retracted their interpretation of the study data [see Reactions 992, p2; 800969583]. 1 Inpharma 13 Sep 2008 No. 1655 1173-8324/10/1655-0001/$14.95 Adis © 2010 Springer International Publishing AG. All rights reserved

Autism group challenges findings of CDC study of MMR vaccine and autism

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Page 1: Autism group challenges findings of CDC study of MMR vaccine and autism

Inpharma 1655 - 13 Sep 2008

■ A new US Centers for Disease Control andPrevention (CDC) study* found no link between themeasles-mumps-rubella (MMR) vaccine and autism.However, the US National Autism Association (NAA)says this study does nothing to dispel the growingpublic concern over a vaccine-autism connection andraises several questions concerning design andmethodology. For a number of years, parents haveclaimed that MMR triggered their child’s subsequentGI disease and autism. In support of this view, theNAA points to a 2002 published study where themajority of autistic children were found to havemeasles in their intestines; among the childrenexamined, there was a clear temporal link betweenMMR exposure and regression. The NAA believes thatthe CDC’s attempt to replicate this 2002 study "fell farshort of proving the safety of the MMR vaccine".* The study will be published in the online journal Public Library ofScience in September.

National Autism Association. CDC Misses Target With Flawed MMR/AutismStudy. Media Release : 3 Sep 2008. Available from: URL: http://www.nationalautism.org 809092852

» Editorial comment: Public concern over a possible linkbetween MMR vaccination and autism continues despite anumber of studies that have failed to show a link betweenthe vaccine and autism [see Reactions 851, p3; 800861202,1004, p2; 809035031, 1019, p2; 800973824, and 1189, p5;801101235]. Notably, the majority of authors of a 1998study that raised the possibility of such a link later retractedtheir interpretation of the study data [see Reactions 992, p2;800969583].