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Study Question: What is the impact of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection on the outcome of a pregnancy after medically assisted reproduction (MAR)?Summary Answer: Our results suggest that MAR pregnancies are not differentially affected by SARS-CoV-2 infection compared to spontaneous pregnancies.What Is Known Already: Information on the effects of coronavirus disease 2019 (COVID-19) on pregnancy after MAR is scarce when women get infected during MAR or early pregnancy, even though such information is vital for informing women seeking pregnancy.Study Design, Size, Duration: Data from SARS-CoV-2 affected MAR pregnancies were collected between May 2020 and June 2021 through a voluntary data collection, organised by the European Society of Human Reproduction and Embryology (ESHRE).Participants/materials, Setting, Methods: All ESHRE members were invited to participate to an online data collection for SARS-CoV-2-infected MAR pregnancies.Main Results and the Role Of Chance: The dataset includes 80 cases from 32 countries, including 67 live births, 10 miscarriages, 2 stillbirths and 1 maternal death. An additional 25pregnancies were ongoing at the time of writing.Limitations, Reasons For Caution: An international data registry based on voluntary contribution can be subject to selective reporting with possible risks of over- or under-estimation.Wider Implications Of the Findings: The current data can be used to guide clinical decisions in the care of women pregnant after MAR, in the context of the COVID-19 pandemic.Study Funding/competing Interest(s): The authors acknowledge the support of ESHRE for the data registry and meetings. J.S.T. reports grants or contracts from Sigrid Juselius Foundation, EU and Helsinki University Hospital Funds, outside the scope of the current work. The other authors declare that they have no conflict of interest.Trial Registration Number: N/A. [ABSTRACT FROM AUTHOR]

The coronavirus disease 2019 (COVID-19) pandemic created a significant impact on medically assisted reproduction (MAR) services. ESHRE decided to mobilize resources in order to collect, analyse, monitor, prepare and disseminate severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) knowledge specifically related to ART and early pregnancy. This article presents the impact of the SARS-CoV-2 pandemic focusing on reproductive healthcare. It details the rationale behind the guidance prepared to support MAR services in organizing and managing the re-start of treatments or in case of any future wave of COVID-19 disease. The guidance includes information on patient selection and informed consent, staff and patient triage and testing, adaptation of ART services, treatment planning and code of conduct. The initiatives detailed in this article are not necessarily COVID-specific and such action plans could be applied effectively to manage similar emergency situations in different areas of medicine, in the future. [ABSTRACT FROM AUTHOR]

Study Question: Are live birth rates (LBR) different after ART cycles between women with primary or recurrent endometrioma?Summary Answer: Women with recurrent endometrioma have similar LBR as compared to patients with primary endometrioma.What Is Already Known: Recurrence rate can be as high as 29% after endometrioma excision. Prior studies on management of endometrioma before ART involve primary endometriomas. There is limited information regarding the prognosis of women with recurrent endometriomas.Study Design, Size, Duration: A multicenter retrospective cohort study, including 76 women with primary and 82 women with recurrent endometriomas treated at the participating centers over a 6-year period.Participants/materials, Setting, Methods: Women with endometrioma who underwent ART at three academic ART centers. Couples with another indication for ART were excluded.Main Results and the Role Of Chance: Female age, median number of prior failed ART cycles, proportion of patients with bilateral endometrioma (28 versus 28.9%), ovarian stimulation protocols, and total gonadotropin consumption were similar between the study groups. Numbers of metaphase two oocytes (5 versus 6), number of embryos transferred, and the proportion of patients undergoing blastocyst transfer were similar across the study groups. Clinical pregnancy rates (36.6 versus 34.2%, absolute difference 2.4%, 95% CI: -12.5 to 17.3%, P = 0.83) and LBR (35.4 versus 30.3%, absolute difference 5.1%, 95% CI: -9.5 to 19.7%, P = 0.51) per started cycle in recurrent and primary endometrioma were similar. Comparable success rates were also confirmed with logistic regression analysis (OR: 1.14, 95% CI: 0.78-0.57, P = 2.3).Limitations, Reasons For Caution: The retrospective design has inherent limitations. Some women with severely decreased ovarian reserve after primary endometrioma excision may not have pursued further treatment.Wider Implications Of the Findings: The management of endometrioma prior to ART is controversial but a different management strategy is not required for recurrent endometriomas. Since recurrent endometriomas do not have a worse impact on ART outcome than primary endometriomas, and repeat surgery has a higher risk for complications, conservative management without surgery can be justified.Study Funding/competing Interest(s): No funding or competing interests to declare.Trial Registration Number: None. [ABSTRACT FROM AUTHOR]

A letter to the editor is presented in response to the article "Assisted reproductive technology and intrauterine inseminations in Europe, 2005: results generated from European registers by ESHRE," by A. Andersen Nyboe and colleagues, published in a 2009 issue of the journal.