It 's not clear if these cases are linked to the outbreak . Day ##care center to require children in infant rooms to be vaccinated . Since January 1 , at least 100 confirmed cases occurred in 16 states and Canada .
It 's not clear if these cases are linked to Disneyland outbreak . Day care center to require staff in infant rooms to be vaccinated . Since January 1 , at least 110 measles cases reported in 16 states and D.C .