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Mumps Outbreak Affects More than 1,500 in New York, New Jersey
CDC Reminding Physicians to Vaccinate, Report Illness
By News Staff
The mumps outbreak, which is the largest in the United States since 2006, began after an 11-year-old boy returned from a trip to the United Kingdom, which had more than 7,000 laboratory-confirmed cases of mumps last year.
The boy attended a summer camp for tradition-observant Jewish boys in New York, where he became symptomatic on June 28. Other campers and staff also became ill, and transmission continued when attendees returned home.
Of the 1,521 cases reported as of Jan. 29, less than 3 percent occurred among persons outside the tradition-observant Jewish community. The CDC said high vaccination coverage in surrounding communities likely prevented other outbreaks.
However, vaccination coverage in the affected community was not low. The CDC said that among patients for whom vaccination status was reported, 88 percent had received at least one dose of mumps-containing vaccine, and 75 percent had received two doses.
The CDC said studies have estimated the effectiveness of the mumps vaccine to be from 73 percent to 93 percent after one dose and from 79 percent to 95 percent after two doses.
Advice From the CDC
- vaccinate with two doses of measles, mumps and rubella -- or MMR -- vaccine;
- high awareness among physicians that mumps can occur, even in communities with high two-dose MMR vaccination coverage;
- ongoing surveillance and prompt reporting of cases to public health officials;
- isolation of patients with suspected and confirmed cases of mumps for five days after onset of parotitis;
- early recognition, diagnosis and public health intervention in congregate settings, such as colleges and schools, where disease can spread rapidly;
- administration during outbreaks of one dose of MMR vaccine for adults and children whose vaccination status is unknown or who have not received the number of MMR doses recommended by the CDC's Advisory Committee on Immunization Practices; and
- consideration of a second dose of MMR for children ages 1 to 4 years and adults who have received only one dose.
The CDC's Advisory Committee on Immunization Practices and the AAFP recommend that children (1-page PDF; About PDFs) receive two doses of MMR, with the first dose administered at age 12-15 months and the second dose at age 4-6 years. During outbreaks, a second dose of vaccine is recommended for children ages 1 to 4 years.
Adults at high risk for disease -- including people who work in health care facilities, international travelers and college students -- also are recommended (2-page PDF; About PDFs) to receive two doses. Health care workers born in 1957 or later without laboratory evidence of immunity should receive two doses, and those born before 1957 without laboratory evidence of immunity should consider receiving one dose, the CDC said.
No deaths have been linked to the ongoing outbreak, but there have been 19 hospitalizations. The CDC said there have been 65 reports of complications from mumps: orchitis (55 cases), pancreatitis (five cases), aseptic meningitis (two cases), transient deafness (one case), Bell's palsy (one case) and oophoritis (one case).
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Vaccines & Immunizations Special Report
More From AAFP
Recommended Childhood Immunization Schedule (1-page PDF; About PDFs)
Recommended Adult Immunization Schedule (2-page PDF; About PDFs)
Morbidity and Mortality Weekly Report: "Update: Mumps Outbreak -- New York and New Jersey, June 2009 - January 2010"
(Feb. 12, 2010)
CDC Outbreak-related Questions and Answers for Healthcare Providers