The disease _________________ was previously considered eliminated in the United States but has made a reappearance due to an increase in non-immunized children and adults which has reduced the broad protection of herd immunity.

Question

The disease _________________ was previously considered eliminated in the United States but has made a reappearance due to an increase in non-immunized children and adults which has reduced the broad protection of herd immunity.​

The disease _________________ was previously considered eliminated in the United States but has made a reappearance due to an increase in non-immunized children and adults which has reduced the broad protection of herd immunity.