evidence: Covid-19: No evidence that vaccines can affect fertility, says new guidance [...] There is "absolutely no evidence" that covid-19 vaccines can affect the fertility of women or men, says new expert guidance. [...] The guidance refutes any link between the vaccines and fertility. "There is absolutely no evidence, and no theoretical reason, that any of the vaccines can affect the fertility of women or men," it says. People of reproductive age should get a covid-19 vaccine when they receive their invitation, including people who are trying to have a baby or thinking about having a baby in the future, the guidance says.