Unfortunately, he also said this week that if you eat enough broccoli (Vitamin A) you don't have to worry about measles. Actual doctors agree that vitamin A is a good treatment for people with measles, but not that it will prevent** the infection in the first place.
He's kind of waffling on the idea of measles vaccines-- On the one hand, he said the vaccine is a good idea. On the other hand, he's generally anti-vaccine.
**Vaccines don't prevent infection. They teach your body how to fight the infection, so it can respond faster and eliminate the infection before it becomes serious.