covid: vaccine not affect sperms
One reason for Covid vaccine hesitancy is the concern about infertility. A recent small study confirmed that there was no adverse effect of the mRNA vaccines on sperm parameters (see covid mRNA vaccine not affect sperm JAMA2021 in dropbox, or doi:10.1001/jama.2021.9976) Details: -- 45 healthy men between the ages of 18 and 50 volunteered in a single center, prospective study at the University of Miami between December 2020 and January 2021 -- these men were recruited through fliers at the University and internal emails -- 21 men received the Pfizer vaccine and 24 the Moderna one -- semen samples were provided after 2-7 days prior to their 1 st vaccine dose and approximately 7 days after the 2 nd dose -- median sexual abstinence 2.8 days (2-3) before baseline and 3 days (3-4) before the follow-up samples --follow-up samples were a mean of 70 days after the 2 nd dose -- those with baseline oligosperm...