This is a prospective observational study. In this study, we aim to investigate theeffect of a recent past Covid-19 infection on the live birth rate in the frozen embryotransfer cycles
Not Provided
Other: frozen embryo transfer
transfer one or two embryos in frozen embryo transfer cycles
Inclusion Criteria:
1. Women aged 20-42 years at the time of ovarian stimulation for in vitro fertilization
2. Women have embryos frozen prior to COVID infection.
Exclusion Criteria:
1. Previous COVID infection before oocyte retrieval
2. Recipient of oocyte donation
3. Undergoing preimplantation genetic testing
4. Presence of hydrosalpinx or endometrial polyp which is not surgically treated
ShangHai JIAI Genetics&IVF Institute
Shanghai, China
Investigator: HE LI, MD
Contact: +8613817223099
He Li, MD
+8613817223099
lihe198900@163.com
Xiaoxi Sun, PhD, Study Director
Shanghai JiAi Genetics & IVF Institute