Fame
Fame doesn't find most immunologists. Days spent in a lab or examination room probably won't draw the eye of the paparazzi. But those who discover new vaccines, find cures, and manage outbreaks will get their name in the headlines. You might even get a new disease named after you if you discover it. Wouldn't that be great? Picture the millions of people who might groan when they say, "Oh no, I've got 'Your Name' disease." Just make sure you've cured it if you're going to have it named after you.
If you want your mug in popular mags, team up with a philanthropic celeb who spends her free time in impoverished nations doling out medicine to all those who need it. That'll get you plenty of wedding invites, Twitter mentions, and likes on Facebook.
But really, you probably aren't in this job for the fame. If you are, you might want to move your career more in the "getting famous" direction and less in the "fourteen years of medical school" direction. Just sayin'.