Dr. Othman Alfleesy had participated and contributed to numerous International conferences ( has presented papers or posters). He has attended in a number of national and International conferences , scientific session & workshops(including workshops of WHO). He also has published a number of valuable researches in a number of international scientific Journals , (in which he forwarded (for the first time) solutions for: 1- sudden infant death syndrome(SIDS) ,(Alfleesy Hypothesis ).2-He had explained Bangungut (Pok kuri) phenomenon and put a solution for this delimma.3- Also he discovered a wrong theory of Zuckerman for oogenesis (1951) .4- Alfleesy discovered the wrong theory of Calvin Bridge(1909) for nondisjunction extrachromosome 21 and Down Syndrome), in his theory Calvin determined mothers as a direct cause of trisomy 21 and Down Syndrome children (maternal cause) , which was not correct at all.Alfleesy proposed a new scientific suggestion. Alfleesy has announced an appeal to all mothers in the world that they are not a responsible or the cause for Down Syndrome children as the scientists had claimed for a century. He is an author of two books. The forensic medicine book , which had wined the University award in 2000.And the other book : medical ethics. He is also an Editorial Board member in a number of International Journals.

Forensic medicine , Bioethics , embryology and Genetics.