What Could the H1N1 Vaccine, Autism, and Chronic Disease Have in Common? Retroviruses. Dawn Crim VACTRUTH 11/09/2009 (vactruth.com) Researchers have known for quite some time now that retroviruses are present in certain vaccines. A particular retrovirus, known as XMRV, has even made the news very recently. It has been found in certain individuals suffering from […]