Vaccination against COVID-19 with any of the available vaccines does not reduce couples' chances of conception, however, the effects are reversed for men who do not get vaccinated, as their fertility may be reduced if they contract coronavirus.
These newest results from a study by the Boston University Department of Public Health in the American Journal of Epidemiology confirm previous similar literature on the safety of available vaccines: "Our study highlights for the first time that COVID-19 vaccination is not associated with fertility problems in couples trying to conceive through sexual intercourse," says Amelia Wesselink, assistant professor of epidemiology in the Department of Public Health and lead author of the study.
The data
The research team analysed online survey data on vaccination, viral infection and fertility in women and men, part of the PRESTO study that follows women trying to conceive from before conception to six months after childbirth.
The 2,126 women from the United States and Canada provided information on lifestyle, medical history and partner characteristics from December 2020 to September 2021. Participants were followed for the study through November 2021.
The fertility levels of women who received at least one dose of vaccine were nearly identical to unvaccinated women in the study. The same finding held true for men who had received at least one dose of the vaccine compared with unvaccinated male participants.
Further analyses that took into account the number of vaccine doses, type of vaccine, infertility history, occupation and geographical area also showed no negative effect of vaccination on fertility.
However, men who tested positive for coronavirus within 60 days of a particular cycle had reduced fertility compared with men who did not get sick or men who tested positive at least 60 days before. This finding complements those of previous studies that have linked coronavirus infection in men to poor sperm quality and other dysfunctions.
Vaccines and menstruation
Using the same data, the research team investigated the possibility that vaccines may affect women's menstrual cycles. The latest findings come to allay concerns about any brief changes in the menstrual cycle, as even if observed, they do not affect the ability to conceive.
Source: ygeiamou.gr
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