This web site was developed by undergraduate students at Brown University as a project for a course in vaccine development (Bio 160). An effort has been made to present information on the prevalent opinions available at this time.  References to published articles and acknowledgements of other sources are cited in the text.  The authors of this web site are not certified medical professionals.  Biomedical research and clinical medicine are constantly evolving fields, thus it is possible that significant advances in research and treatments will come into existence following posting of this web site.