LAKE OSWEGO, Ore. (AP) — One is a businesswoman and an MBA graduate. Another is a corporate vice president. The third is a registered nurse.

These three mothers — all of them educated, middle-class professionals — are among the vaccine skeptics who have been widely ridiculed since more than 100 people fell ill in a measles outbreak traced to Disneyland.

The backlash has been so severe that dozens of anti-vaccine parents contacted by The Associated Press were afraid to speak out. But a handful of mothers agreed to discuss their thinking.

Michelle Moore is a businesswoman who lives in the Portland suburb of Lake Oswego, Oregon, with her 2½-year-old twin girls. She says vaccines have a place, but she regards them as a medical choice that should be researched carefully.