NEW YORK – By combining genomic and epidemiological data, researchers were able to trace how the mumps spread in Massachusetts and elsewhere in the US during the 2016 to 2017 outbreak.
There are usually fewer than 10 cases of mumps every year in Massachusetts, but in 2016 there were more than 250 reported mumps cases and more than 170 cases in 2017, even among a highly vaccinated population.