“Measles is once again endemic — a constant and predictable presence — in the United States, 26 years after it was declared eliminated in the country, an analysis of genetic data from outbreaks of the disease has found,” the New York Times reports.“Data from the outbreaks will be the focus of deliberations by an international panel of scientific experts convening on Tuesday to decide whether the United States should lose its official designation as a nation that has eliminated measles.”