You’ve seen the recent headlines and heard the news reports, but they’re only part of this deadly virus’s story. This week we’re covering the rest. We take you on a one-of-a-kind tour of measles, exploring how this vaccine-preventable virus can wriggle its way into your cells and cause short-term misery and long-term damage. Then we trace the history of this notorious killer from its bovine beginnings to the devastation it wreaked on unexposed populations. The tour ends with a look at measles by the numbers around the world today. If you take home one souvenir from this tour, let it be gratitude for vaccines!