“…Subclinical infec tion may occur in one-third of those exposed. However, significant morbid ity has been associated with mumps involving the nerv�us system (332-336), kidneys (337,338), pancreas (339)(340)(341)(342), heart (343-347), gonads (348), thyroid (349,350), and synovia (351)(352)(353)(354). Deafness has also been reported (355)(356)(357)(358).…”