“…At present, the evidence is rapidly growing that the coronavirus vaccination itself cannot be directly and biologically linked to the decline in births and fertility (Wang et al, 2023; Zaçe et al, 2022). This unanimous opinion is supported by a growing number of studies with different designs and on male and female fertility (Aharon et al, 2022; Ba et al, 2023; Barda et al, 2022; Gonzalez et al, 2021; Morris, 2021; Reschini et al, 2022; Yang et al, 2023; Yildiz et al, 2023) and miscarriage (Yland et al, 2023; Zauche et al, 2021), including already some review articles (Rimmer et al, 2023; Wesselink et al, 2022; Zhang et al, 2023; Zhu et al, 2023). Several studies report changes in the duration of menstrual cycle length following COVID-19 vaccination (Alvergne et al, 2023), but these changes are small (+/-1 day) and resume in the next cycle, thus not threatening fertility (Alvergne, 2023).…”