During a campaign event with an all-female audience, Trump described himself as the "father of IVF" when asked what access to the fertility treatment would look like with him as president
Asked to respond, Harris said decisions made by her presidential opponent had been "harmful to women", referring to the overturning of a law that guaranteed the right to an abortion across the US
It comes hours before the vice-president's first formal interview with conservative-leaning network Fox News, airing at 18:00 ET (23:00 BST)
The latest national polling figures suggest Harris has a slight lead over Trump - but it's neck and neck in the all-important swing states
Vice-President Kamala Harris has responded to comments from Donald Trump that we brought you earlier, when he called himself the "father of IVF" during a town hall of women voters.
Speaking to reporters in before boarding Air Force 2 to Pennsylvania, Harris says Trump's label for himself on the reproductive procedure was "quite bizarre".
She says he should in fact be taking responsibility for the women living under abortion bans or restrictive abortion laws around the country.
"So let's not be distracted by his choice of words. The reality is, his actions have been very harmful to women and families in America on this issue," she says.
Harris is referring to the fact that many US states have some kind of abortion ban or restriction on the books after the 2022 overturning of the law that guaranteed the right to an abortion nationally. That decision was made by a conservative-majority Supreme Court, three of whom were nominated by Trump when he was president.
Trump has said he is not in favour of some of the most restrictive abortion regulations that some in the Republican party have championed, but that he wants to leave the matter up to state law rather than federal.