
15/01/2022
Coronavirus disease 2019 (COVID-19) vaccination is associated with a small change in cycle length but not me**es length.
Natural Cycles.” We included U.S. residents aged 18–45 years with normal cycle lengths (24–38 days) for three consecutive cycles before the first vaccine dose followed by vaccine-dose cycles (cycles 4–6) or, if unvaccinated, six cycles over a similar time period. We calculated the mean withi...