Each year, several hundred children are born with faulty immune systems, leaving them vulnerable to every germ they encounter. Thousands of adults also have primary immunodeficiency, but don't know it. Unlike the "boy in the bubble" 30 years ago, people diagnosed with primary immunodeficiency today can often be successfully treated or even cured. Unfortunately, many cases are being missed - particularly in patients without primary care physicians. In this program, we'll explain why.