In November , the CDC called the spike in mumps cases , `` the largest U.S. mumps outbreak since 2006 , when the United States experienced a resurgence of mumps with 6,584 reported cases . '' Almost all the cases of mumps involve adolescent Jews Orthodox . Outbreak traced to boy who went to U.S. during mumps outbreak . Severe cases of mumps can lead to brain inflammation and deafness . It 's the largest outbreak in the United Kingdom since August .
Almost all the cases of mumps involve adolescent Jews Orthodox . Outbreak traced to boy who went to U.S. during mumps outbreak . Severe cases of mumps can lead to brain inflammation and deafness . It 's the largest outbreak in the United Kingdom since August .