The View host has become well-known for several years for her public views on vaccines, specifically her claims that vaccines cause autism. McCarthy has blamed vaccines for causing her son Evan to develop autism.
But she wasn't specifically asking her Twitter followers about their views on the subject Thursday when she received the backlash.
"What is the most important personality trait you look for in a mate? Reply using #JennyAsks," she wrote on Twitter.
What is the most important personality trait you look for in a mate? Reply using #JennyAsks— Jenny McCarthy (@JennyMcCarthy) March 13, 2014
Her seemingly innocuous question inspired a barrage of responses criticizing the talk-show host for her thoughts on vaccines. One even blamed her way of thinking for the recent resurgence of the measles in New York City.
Having seen children die from Measles in South Sudan its pretty clear why vaccines are so important #JennyAsks— John Holley (@john_holley) March 16, 2014