Young Mother was a mother who came to the clinic to have her baby treated by Gregory House in the Season 1 episode Paternity. She was portrayed by actress Kylee Cochrane.
House reviewed the baby's chart while doing his diagnosis and noted to the mother that the baby seemed to be behind on his vaccination schedule. The mother told him that she didn't believe in vaccinations because she didn't want to fill the coffers of the big pharmaceutical companies. House started talking about natural products, then started talking about baby coffins and how if a few more babies died, the pharmaceutical companies would lower their prices. She became worried and asked House what was wrong with her baby. House replied that it had a cold.
House Vs. Anti-Vaxxer - House M.D.