80% of Iowa mumps cases were in vaccinated people

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80% OF IOWA MUMPS CASES WERE IN VACCINATED PEOPLE.

Out of 245 reported mumps cases, 151 were interviewed for vaccine history: 0 mumps vaccine = 8 cases = 5%1 MMR vaccine = 21 " = 14%2 MMR vaccine = 99 " = 66%unknown vax history = 23 " = 15%

http://customwire.ap.org/dynamic/stories/M/MUMPS_OUTBREAK?SITE=SCCHA & SECTION=HOME & TEMPLATE=DEFAULT & CTIME=2006-03-31-22-22-50 http://www.idph.state.ia.us/adper/cade.asp

Iowa Mumps Update

Through Thursday, March 30th, 2006

Overview:

A total of 245 confirmed, probable and suspect1 cases of mumps have been reported to the Iowa Department of Public Health (IDPH) as of Thursday, March 30th. Thirty-six counties are now experiencing activity. The case profile remains similar to previous reports. No outbreaks in schools or daycare centers have been reported. There have been seven cases of orchitis reported, and one case of encephalitis is being investigated.

IDPH published an MMWR dispatch today available at http://www.cdc.gov/mmwr/preview/mmwrhtml/mm55d330a1.htm. The article will also be in next week’s MMWR.

Updates will now be provided on Tuesdays and Thursdays. For the most recent mumps tools and documents, check the HAN or our website at http://www.idph.state.ia.us/adper/cade.asp. Please direct questions regarding this report or the surveillance network to Meghan at mharris@... or 515-281-7134.

Case summary Number of probable and confirmed cases 245 Number of completed F/U rpts 136 Median age at onset 21 % Students currently attending college 23% (56/245)

0 MMR 5% (8/136) 1 MMR 14% (21/136) 2 MMR 66% (99/136) Unknown 15% (23/136) % with any history of MMR 80%

Average duration of symptoms 7 days

Epi-linked 45/245

Symptom distribution % Affected Parotitis 77% (106/136) Fever 34% (46/136) Sub/max swelling 42% (57/136) Sore throat 34% (46/136) Headache 11% (15/136) Cough 10% (13/136) Orchitis 5% (7/136)

† Cases still being assessed for the weeks ending March 25 and April 1

Note: Includes all cases for the week prior to and including the date listed, with the exception of the current week. The graph uses the MMWR week ending schedule.