JACKSON (AP) – Mississippi officials are monitoring four residents exposed to measles in Tennessee. The health department says in a statement the four are under home quarantine but did not say where. They had not been vaccinated for the potentially deadly disease. State epidemiologist Thomas Dobbs says those who haven’t been vaccinated are most at risk of the highly contagious, air born disease. The department says any child 12 months of age or older should get vaccinations.