{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,7]],"date-time":"2026-06-07T06:40:49Z","timestamp":1780814449106,"version":"3.54.1"},"reference-count":44,"publisher":"American Academy of Pediatrics (AAP)","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2007,10,1]]},"abstract":"<jats:p>OBJECTIVES. Mumps is a vaccine-preventable disease that may cause outbreaks. In July 2005, an outbreak of mumps occurred during a children's summer camp in upstate New York. An investigation was initiated to describe the cases and evaluate vaccine effectiveness.<\/jats:p>\n               <jats:p>METHODS. A retrospective cohort study was conducted among 541 children from the United States and abroad who attended a 1- or 2-month overnight summer camp. Patients with mumps were interviewed; serologic analysis was conducted for 6 case patients. Vaccine effectiveness was calculated by retrospective review of immunization records for 507 attendees who were eligible for vaccination and had verified immunization history.<\/jats:p>\n               <jats:p>RESULTS. Thirty-one camp attendees were identified as having mumps (attack rate: 5.7%); 5 (83%) of 6 patients tested had positivity for mumps immunoglobulin M. Of the 507 participants (including 29 patients) with available immunization history, 440 (including 16 [87%] patients) were 2-dose recipients of mumps vaccine (attack rate: 3.6%); 46 participants (including 4 [9%] patients) were 1-dose recipients (attack rate: 8.7%); and 21 (including 9 [4%] patients) were unvaccinated (attack rate: 42.9%). Vaccine effectiveness was 92% for 2 doses and 80% for 1 dose.<\/jats:p>\n               <jats:p>CONCLUSIONS. Outbreaks of mumps in settings such as summer camps can occur despite high vaccination rates. Vaccine effectiveness for 2 mumps vaccinations was greater than vaccine effectiveness for 1 mumps vaccination. Therefore, recommendation of 2 mumps vaccinations for summer camp participants continues to be appropriate. Control of mumps disease relies on broad vaccination coupled with correct clinical diagnosis and strict control measures.<\/jats:p>","DOI":"10.1542\/peds.2006-3451","type":"journal-article","created":{"date-parts":[[2007,10,1]],"date-time":"2007-10-01T17:11:46Z","timestamp":1191258706000},"page":"e862-e868","source":"Crossref","is-referenced-by-count":55,"title":["Effectiveness of Previous Mumps Vaccination During a Summer Camp Outbreak"],"prefix":"10.1542","volume":"120","author":[{"given":"Joshua K.","family":"Schaffzin","sequence":"first","affiliation":[{"name":"Epidemic Intelligence Service, Office of Career Workforce and Development"},{"name":"New York State Department of Health, Albany, New York"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lynn","family":"Pollock","sequence":"additional","affiliation":[{"name":"New York State Department of Health, Albany, New York"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cynthia","family":"Schulte","sequence":"additional","affiliation":[{"name":"New York State Department of Health, Albany, New York"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kyle","family":"Henry","sequence":"additional","affiliation":[{"name":"Sullivan County Health Department, Monticello, New York"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gustavo","family":"Dayan","sequence":"additional","affiliation":[{"name":"Epidemiology Branch, Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Debra","family":"Blog","sequence":"additional","affiliation":[{"name":"New York State Department of Health, Albany, New York"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Perry","family":"Smith","sequence":"additional","affiliation":[{"name":"New York State Department of Health, Albany, New York"},{"name":"School of Public Health, State University of New York, Albany, New York"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"417","published-online":{"date-parts":[[2007,10,1]]},"reference":[{"key":"2021120902303533100_R1","doi-asserted-by":"crossref","unstructured":"Hilleman MR, Buynak EB, Weibel RE, Stokes J Jr. Live, attenuated mumps-virus vaccine. 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