Measles meets the official definition of epidemic as experts speculate that the virus has established itself permanently in ...

The U.S. is up to 1,001 confirmed measles cases. Texas continues to confirm fewer cases in what's now a nearly four-month ...

The measles outbreak that began in Gaines County has officially reached the Dallas-Fort Worth area, with two cases now linked ...

Mexico's New World Screwworm outbreak halts livestock imports at the southern border as US officials work to prevent the parasitic fly from spreading to American animals.