Furthermore, we summarize the scientific data, which confirms that there is no link between COVID-19 vaccines to problems related to pregnancy arising from the so-called similarity between syncytin and the spike protein of SARS-CoV-2 (Hillson et al. 2021; Kloc et al. 2021; Morris 2021; Rajak et al. 2021; Shimabukuro et al. 2021). Here, ERVW-1 is linked to COVID-19.