The impact of viruses on autism has been an ongoing discussion for many years. There has been much talk about in utero exposure and early on exposure to viruses that may increase the risk of autism. Researchers have found that children with autism have a decreased number of T-cells which means their immune system is impaired and unable to fight infection. It is also possible that early exposure to viruses may cause the immune system to create a production of antibodies against the child's own brain which would result in neurological deficits as seen in ASD. Viruses can cause harm to the nerve tissue, thus negatively affecting the nervous system. Viruses can also stimulate an immune response by creating antibodies in order to eliminate the viruses. Sometimes environmental toxins can activate these antibodies. If the immune response is too weak then the viruses may affect the body tissue which causes inflammation. Inflammation is the body's way of fighting an attack, so long term and widespread inflammation (especially in the brain), as seen in children with autism, results in chronically sick children with neurological and behavioral changes. The following viruses may play a role in autism: Herpes Simplex Virus (HSV) 1& 2; Human Herpes Virus #6 (HHV 6); Epstein - Barr Virus (EBV); Measles, Varicella Zoster Virus (VZV), and Cytomegalovirus (CMV). Talk to your child's doctor about testing for these viruses and also see the PANDAS/PANS section for related information.
Autistic Disorder and Viral Infections Description: From the Journal of Neurovirology.
Martha Herbert, MD Description: Dr. Herbert is a Harvard trained neurologist and a brain development researcher. For nearly two decades her main clinical, research and advocacy focus was on autism. She recognizes that many children with autism are chronically ill.
Altered T Cell Responses in Children with Autism Description: A PubMed article.
Viral Exposure and Autism Description: News and views on autism research.
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Forum/Blog Name: Lyme Induced Autism Family Support Group Description: Sharing info on Autism that is associated with bacteria (Lyme disease and its co-infections).
Forum/Blog Name: Viral Exposure and Autism Description: Questioning Answers - Viral exposure and autism.
Forum/Blog Name: Viral Exposure and Autism Description: This blog presents the evidence from many sources of viral exposure and autism. There are numerous scientific papers and their links on this topic. In addition there is information on the connection of Vitamin D deficiency and its relationship to autism.