Final answer:
In males, mumps can cause testicular inflammation but rarely results in sterility. The use of mumps vaccines has significantly reduced the number of cases.
Step-by-step explanation:
In about one-third of males who are past puberty, mumps can cause testicular inflammation, usually affecting only one testis and rarely resulting in sterility. The incidence of mumps has significantly decreased with the use of mumps vaccines. According to the U.S. Centers for Disease Control and Prevention (CDC), the number of mumps cases dropped from more than 150,000 in 1968 to fewer than 1,700 in 1993 to only 11 reported cases in 2011.