Tests have failed to support a theory that the worldwide AIDS epidemic was touched off because an experimental oral polio vaccine used in Africa more than 40 years ago was made from chimpanzee
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/tests-dont-support-theory-hiv-origin
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/international-herald-tribune-bangkok
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health