A Two-Phase Case-Control Study of Autism Risk Among Children Born From the Late 1990s Through the Early 2000s in the United States.
BACKGROUND This study evaluated the hypothesis that the 1999 recommendation by the American Academy of Pediatrics (AAP) and US Public Health Service (PHS) to reduce exposure to mercury (Hg) from Thimerosal in US vaccines would be associated with a reduction in the long-term risk of being diagnosed with autism. MATERIAL AND METHODS A two-phase assessment utilizing a case (n=73) -control (n=11,783) study in the Vaccine Adverse Event Reporting System (VAERS) database (for hypothesis generating) and a more rigorous, independent matched case (n=40) -control (n=40) study (hypothesis testing) was undertaken. RESULTS Analysis of the VAERS database using logistic regression revealed that the odds ratio (OR) for being an autism case in the VAERS database significantly decreased with a more recent year of vaccination in comparison to controls (OR=0.65) from 1998 to 2003. Sex-separated analyses revealed similar significant effects for males (OR=0.62) and females (OR=0.71). Analyses of the matched case-control data revealed, using the t-test statistic, that the mean date of birth among cases diagnosed with an autism spectrum disorder (ASD) (2000.5±1.2) was significantly more in the past than in controls (2001.1±1.3). Logistic regression also revealed that the OR for being diagnosed with ASD significantly decreased with a more recent date of birth in comparison to controls (OR=0.67) from 1998-2003. CONCLUSIONS This study reveals that the risk of autism during from the late1990s to early 2000s in the US significantly decreased with reductions in Hg exposure from Thimerosal-containing childhood vaccines, but future studies should examine this phenomenon in other US populations. Vaccine programs have significantly reduced the morbidity and mortality associated with infectious disease, but Thimerosal should be removed from all vaccines.
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Dr. Manish Bhatia
BHMS, BCA, M.Sc. Homeopathy (UCLAN, UK), CICH (IACH, Greece)
Dr. Manish Bhatia is the Founder Director of Hpathy.com, world’s leading homeopathy portal, serving homeopathy to more than half a million people every month. He is also Editor of Homeopathy for Everyone.
He runs a consultation office at Jaipur (Asha Homeopathy) and is one of the most well known Indian homeopaths globally. He has been practicing since 2001 and is helping Autism and other psychiatric patients since 2006. He was awarded Rajasthan’s foremost Raja Pajvan Dev Award For Excellence in the field of Medicine in 2015.
He has been working as an Asso. Professor of Organon of Medicine at S. K. Homeopathic Medical College since 2002. He was awarded with the prestigious APJ Abdul Kalam State Level Teacher’s Award in 2016. He has also given seminars and webinars in several countries of Europe, Americas and Australia.
He is the author of Lectures on Organon of Medicine Vol. I & II (English, Bulgarian, German editions), which are approved by the Central Council of Homeopathy (India) for BHMS and MD (Hom) syllabus. He is a contributing author to the book “Homeopathy and Mental Health Care: Integrative Practice, Principles and Research” and co-editor of “The Fireside Book of Homeopathy Tales.”