A woman in Montgomery County is being treated in a hospital after contracting measles. Health officials have linked her case to a family that was exposed to the illness through an out-of-state visitor. The woman's case is the fourth to be confirmed in the county.

All four patients are from the same family and had not been vaccinated against measles. Further information about the cases is available from the Montgomery County Public Health department, which has been tracking the cluster of measles cases in the area.