Meningitis deaths may be undercounted in Tenn.

"The latest CDC data shows that in addition to the 15 deaths, 153 Tennessee patients have been sickened from the outbreak. Nationwide, 63 deaths have been recorded with 749 patients sickened. The state with the most cases is Michigan at 264 sickened, according to CDC data. Michigan also had the most deaths from the outbreak with 19. Twenty states had cases of fungal meningitis."