The pediatrician says the immune system can remember fighting off past illnesses and creates memory cells that contain antibodies that live in your body for decades. These antibodies are able to fight off illnesses you have already battled before making you sick. He says researchers have discovered that measles kills off some of those memory cells and can possibly cause someone to be susceptible to childhood diseases again.
He notes that upwards of 70 percent of someone's immune memory can be wiped out by having the measles. Dr. Ball stresses that getting the measles vaccine does not cause damage to someone's immune memory, and actually improves someone's immune system.
He also shares that the death rate for other diseases (like pneumonia and diarrheal diseases) drops in people who receive the measles vaccine and implores parents to protect their children and get the vital vaccine.