{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T12:41:00Z","timestamp":1777898460689,"version":"3.51.4"},"reference-count":15,"publisher":"SAGE Publications","issue":"1","license":[{"start":{"date-parts":[[2014,1,1]],"date-time":"2014-01-01T00:00:00Z","timestamp":1388534400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Public Health Rep"],"published-print":{"date-parts":[[2014,1]]},"abstract":"<jats:sec>\n                    <jats:title>Objective.<\/jats:title>\n                    <jats:p>The Philadelphia Department of Public Health (PDPH) conducts active surveillance for varicella in West Philadelphia. For its approximately 300 active surveillance sites, PDPH mandates biweekly reports of varicella (including zero cases) and performs intensive case investigations. Elsewhere in Philadelphia, surveillance sites passively report varicella cases, and abbreviated investigations are conducted. We used active varicella surveillance program data to inform the transition to nationwide passive varicella surveillance.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods.<\/jats:title>\n                    <jats:p>We compared classification of reported cases, varicella disease incidence, and reporting completeness for active and passive surveillance areas for 2005\u20132010. We assessed reporting completeness using capture-recapture analysis of 2- to 18-year-old cases reported by schools\/daycare centers and health-care providers.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results.<\/jats:title>\n                    <jats:p>From 2005 to 2010, PDPH received 3,280 passive and 969 active surveillance varicella case reports. Most passive surveillance reports were classified as probable cases (18% confirmed, 56% probable, and 26% excluded), whereas nearly all of the active surveillance reports were either confirmed or excluded (36% confirmed, 11% probable, and 53% excluded). Overall incidence rates calculated using confirmed\/probable cases were similar in the active and passive surveillance areas. Detection of laboratory-confirmed, breakthrough, and moderate-to-severe cases was equivalent for both surveillance areas.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions.<\/jats:title>\n                    <jats:p>Although active surveillance for varicella results in better classified cases, passive surveillance provides comparable data for monitoring disease trends in breakthrough and moderate-to-severe varicella. To further improve passive surveillance in the two-dose-varicella vaccine era, jurisdictions should consider conducting periodic enhanced surveillance, encouraging laboratory testing, and collecting additional varicella-specific variables for passive surveillance.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/003335491412900108","type":"journal-article","created":{"date-parts":[[2017,7,3]],"date-time":"2017-07-03T23:56:08Z","timestamp":1499126168000},"page":"47-54","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":3,"title":["Comparing Active and Passive Varicella Surveillance in Philadelphia, 2005\u20132010: Recommendations for the Transition to Nationwide Passive Varicella Disease Surveillance"],"prefix":"10.1177","volume":"129","author":[{"given":"Kendra","family":"Viner","sequence":"first","affiliation":[{"name":"Philadelphia Department of Public Health, Philadelphia, PA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dana","family":"Perella","sequence":"additional","affiliation":[{"name":"Philadelphia Department of Public Health, Philadelphia, PA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Adriana","family":"Lopez","sequence":"additional","affiliation":[{"name":"Centers for Disease Control and Prevention, Atlanta, GA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Stephanie","family":"Bialek","sequence":"additional","affiliation":[{"name":"Centers for Disease Control and Prevention, Atlanta, GA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michael","family":"Nguyen","sequence":"additional","affiliation":[{"name":"Food and Drug Administration, Rockville, MD"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Niya","family":"Spells","sequence":"additional","affiliation":[{"name":"Philadelphia Department of Public Health, Philadelphia, PA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Barbara","family":"Watson","sequence":"additional","affiliation":[{"name":"Philadelphia Department of Public Health, Philadelphia, PA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2014,1,1]]},"reference":[{"key":"bibr1-003335491412900108","unstructured":"Centers for Disease Control and Prevention (US). Varicella Active Surveillance Project: West Philadelphia [cited 2011 Nov 5]. Available from: URL: http:\/\/www.cdc.gov\/vaccines\/stats-surv\/vasp\/default.htm#areas"},{"issue":"41","key":"bibr2-003335491412900108","first-page":"1126","volume":"55","year":"2006","journal-title":"MMWR Morb Mortal Wkly Rep"},{"issue":"4","key":"bibr3-003335491412900108","first-page":"1","volume":"56","author":"Marin M","year":"2007","journal-title":"MMWR Recomm Rep"},{"key":"bibr4-003335491412900108","doi-asserted-by":"publisher","DOI":"10.1001\/jama.287.5.606"},{"issue":"1","key":"bibr5-003335491412900108","first-page":"9","volume":"52","year":"2003","journal-title":"MMWR Morb Mortal Wkly Rep"},{"issue":"41","key":"bibr6-003335491412900108","first-page":"1124","volume":"55","year":"2006","journal-title":"MMWR Morb Mortal Wkly Rep"},{"issue":"53","key":"bibr7-003335491412900108","first-page":"1","volume":"58","year":"2011","journal-title":"MMWR Morb Mortal Wkly Rep"},{"key":"bibr8-003335491412900108","unstructured":"Census Bureau (US). Census 2000 [cited 2011 Oct 9]. Available from: URL: http:\/\/www.census.gov\/main\/www\/cen2000.html"},{"key":"bibr9-003335491412900108","unstructured":"Centers for Disease Control and Prevention (US). Statistics and surveillance: Vaccination coverage in the U.S.: Estimated vaccination coverage with 1+ varicella among children 19\u201335 months of age by state and immunization action plan area [cited 2011 Jun 4]. Available from: URL: http:\/\/www2a.cdc.gov\/nip\/coverage\/nis\/nis_iap3.asp?fmt=r&rpt=tab28_var_race_iap&qtr=Q1\/2010-Q4\/2010"},{"key":"bibr10-003335491412900108","doi-asserted-by":"publisher","DOI":"10.1097\/INF.0b013e3181a90b16"},{"key":"bibr11-003335491412900108","unstructured":"Council of State and Territorial Epidemiologists. Position statement 09-ID-68: Public health reporting and national notification for varicella. 2009 [cited 2011 May 13]. Available from: URL: http:\/\/wwwn.cdc.gov\/nndss\/script\/casedef.aspx?CondYrID=890&DatePub=1\/1\/2010%2012:00:00%20AM"},{"key":"bibr12-003335491412900108","first-page":"1","volume-title":"Manual for the surveillance of vaccine-preventable diseases","author":"Lopez A","year":"2011","edition":"5"},{"key":"bibr13-003335491412900108","unstructured":"Census Bureau (US). 2010 Census data [cited 2013 Nov 12]. Available from: URL: http:\/\/www.census.gov\/2010census\/data"},{"key":"bibr14-003335491412900108","volume-title":"SAS\u00ae: Version 9.1.3","author":"SAS Institute, Inc.","year":"2005"},{"key":"bibr15-003335491412900108","doi-asserted-by":"publisher","DOI":"10.1001\/jama.292.6.704"}],"container-title":["Public Health Reports\u00ae"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/003335491412900108","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/003335491412900108","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T09:31:16Z","timestamp":1777627876000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/003335491412900108"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2014,1]]},"references-count":15,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2014,1]]}},"alternative-id":["10.1177\/003335491412900108"],"URL":"https:\/\/doi.org\/10.1177\/003335491412900108","relation":{},"ISSN":["0033-3549","1468-2877"],"issn-type":[{"value":"0033-3549","type":"print"},{"value":"1468-2877","type":"electronic"}],"subject":[],"published":{"date-parts":[[2014,1]]}}}