My son is fascinated by superheroes. He watches all the new movies and loves playing with his action figures. And with good reason – heroes are important symbols of defending others and promoting justice, so that good, ultimately, triumphs over evil.
But not all heroes are fictional. There are some real-life heroes who work behind the scenes, who have been shielding us from the villainous threat of deadly diseases for decades. Unseen and unheard, these protectors are silently striving every day to preserve the one thing most important to us – our health.


