Only one case of mumps was reported to MDH during 2003; a total of 33 mumps cases have been reported in the past five years.
The case was a 25-year-old white, non-Hispanic male, with unknown history of vaccination with measles, mumps and rubella (MMR) vaccine. No source case was identified. Adults represent an increasing proportion of mumps cases reported in Minnesota. In 2002, three of the five cases occurred in adults, highlighting the need to assess the mumps immunization status of adults.
This case was laboratory confirmed by positive IgM serology; however, no convalescent serum specimen was collected to demonstrate a rise in serum IgG antibody. Both IgM and IgG serologic testing should be performed on suspect mumps cases, as false positive indirect immunofluorescent antibody (IFA) tests for mumps IgM have been reported. Mumps can also be confirmed by viral culture of throat washings, urine, or spinal fluid specimens. Specimens for viral culture should be collected during the first five days of illness.
Go to full issue: DCN, August 2004: Volume 32, Number 4