During the recent surge of tens of thousands of young illegal immigrants crossing the Mexico-U.S. border, the Centers for Disease Control warned staff that many will be infected with tuberculosis — but the public wasn’t given a head’s up.

In fact, the young adults, few of whom had received the types of vaccines U.S. children received, arrived with TB, swine flu and even Dengue, according to reports that eventually filtered out of border agents and hospitals on or near the U.S. border.