Assessment of Bacterial Contamination at the Time of Embryo Transfer, and its Impression on the In-VitroFertilization / Pregnancy Outcome, in Sana’a City, Yemen

Abstract

Background: In spite of advances in the field of assisted reproductive techniques including in-vitro fertilization (IVF) and intra-cytoplasmic sperm injection (ICSI), the pregnancy rate remained low. One of the major events in fertility is implantation process. One of the most important negative factors affecting implantation and pregnancy outcome is introduction of normal flora or potential pathogens of vagina or cervical region into uterus during embryo transfer.