It’s long been said you should never discuss religion or politics in polite company, but this year that might be a third topic to avoid: vaccinations. Many Iowans are planning their first big family meals in a few years, and University of Iowa professor and psychologist Michele Williams says if you’re concerned some family members may endanger others, you’ll need to speak up.

While some family members may want to be cautious for children or the elderly at Thanksgiving, for others, not getting vaccinated is part of their identity and it’s an expression of personal freedom.

Some Iowans have quit their jobs to avoid mandatory vaccinations at their employer, she says, so it’s clearly an issue about which they feel strongly.

Williams is a U-I professor of management & entrepreneurship in the Tippie College and she’s a psychologist who specializes in management communications and relationships.