NIH released information from the study supported by the Eunice Kennedy Shriver NIH’s National Institute of Child Health and Human Development that getting vaccinated against COVID-19 does not affect couples’ ability to conceive, but getting infected with COVID-19 could cause temporary male fertility problems. Between December 2020 and September 2021, the researchers recruited 2,126 female participants between the ages of 21 and 45 in the United States or Canada who were trying to get pregnant. Every eight weeks, the participants filled out questionnaires about their health, lifestyle, COVID-19 vaccination and infection status, and partners’ health. Participants who became pregnant during this time answered questions about their pregnancy. Male partners were also invited to fill out questionnaires about themselves. They found that couples in which one or both partners had been vaccinated were no less likely than other couples to conceive. Only one factor was linked to lower fertility: recent infection with COVID-19.