Here’s a map of MMR vaccine rates in the Valley. The redder the ZIP code, the lower the vaccination rate. The CDC estimates that 92.7% of kindergarteners nationally have had two doses of the MMR ...

DuBois said those views translate to clicks on her listings in D.C. and Virginia. “A lot of follow-up calls from other agents going, 'How many more leads? How many more sales?'" she said.