An outbreak of chickenpox in an asylum seeker centre in Italy: outbreak investigation and validity of reported chickenpox history, December 2015-May 2016
An outbreak of chickenpox occurred between December 2015 and May 2016 among asylum seekers in a reception centre in Latium, Italy. We describe the epidemiological and laboratory investigations, control measures and validity of reported history of chickenpox infection. Serological screening of all re...
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creator | Vairo, Francesco Di Bari, Virginia Panella, Vincenzo Quintavalle, Giuseppe Torchia, Saul Serra, Maria Cristina Sinopoli, Maria Teresa Lopalco, Maurizio Ceccarelli, Giancarlo Ferraro, Federica Valle, Sabrina Bordi, Licia Capobianchi, Maria Rosaria Puro, Vincenzo Scognamiglio, Paola Ippolito, Giuseppe |
description | An outbreak of chickenpox occurred between December 2015 and May 2016 among asylum seekers in a reception centre in Latium, Italy. We describe the epidemiological and laboratory investigations, control measures and validity of reported history of chickenpox infection. Serological screening of all residents and incoming asylum seekers was performed, followed by vaccine offer to all susceptible individuals without contraindication. Forty-six cases were found and 41 were associated with the outbreak. No complications, hospitalisations or deaths occurred. Serological testing was performed in 1,278 individuals and 169 were found to be susceptible, with a seroprevalence of 86.8%. A questionnaire was administered to 336 individuals consecutively attending the CARA health post to collect their serological result. The sensitivity, specificity and the positive and negative predictive value (PPV and NPV) of the reported history of chickenpox were 45.0%, 76.1%, 88.3% and 25.6%, respectively. We observed an increasing trend for the PPV and decreasing trend for the NPV with increasing age. Our report confirms that, in the asylum seeker population, chickenpox history is not the optimal method to identify susceptible individuals. Our experience supports the need for additional prevention and control measures and highlights the importance of national and local surveillance systems for reception centres. |
doi_str_mv | 10.2807/1560-7917.ES.2017.22.46.17-00020 |
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We describe the epidemiological and laboratory investigations, control measures and validity of reported history of chickenpox infection. Serological screening of all residents and incoming asylum seekers was performed, followed by vaccine offer to all susceptible individuals without contraindication. Forty-six cases were found and 41 were associated with the outbreak. No complications, hospitalisations or deaths occurred. Serological testing was performed in 1,278 individuals and 169 were found to be susceptible, with a seroprevalence of 86.8%. A questionnaire was administered to 336 individuals consecutively attending the CARA health post to collect their serological result. The sensitivity, specificity and the positive and negative predictive value (PPV and NPV) of the reported history of chickenpox were 45.0%, 76.1%, 88.3% and 25.6%, respectively. We observed an increasing trend for the PPV and decreasing trend for the NPV with increasing age. Our report confirms that, in the asylum seeker population, chickenpox history is not the optimal method to identify susceptible individuals. Our experience supports the need for additional prevention and control measures and highlights the importance of national and local surveillance systems for reception centres.</description><identifier>ISSN: 1560-7917</identifier><identifier>ISSN: 1025-496X</identifier><identifier>EISSN: 1560-7917</identifier><identifier>DOI: 10.2807/1560-7917.ES.2017.22.46.17-00020</identifier><identifier>PMID: 29162209</identifier><language>eng</language><publisher>Sweden: Centre Europeen pour la Surveillance Epidemiologique du SIDA (European Centre for the Epidemiological Monitoring of AIDS)</publisher><subject>Adult ; Africa - ethnology ; Arabs - statistics & numerical data ; Chicken pox ; Chickenpox - diagnosis ; Chickenpox - epidemiology ; Chickenpox Vaccine - administration & dosage ; Disease Outbreaks - prevention & control ; Disease Susceptibility ; Epidemics ; Female ; Humans ; Italy - epidemiology ; Male ; Political asylum ; Refugees ; Refugees - statistics & numerical data ; Seroepidemiologic Studies ; Surveillance and Outbreak Report ; Syria - ethnology ; Travel ; Young Adult</subject><ispartof>Euro surveillance : bulletin européen sur les maladies transmissibles, 2017-11, Vol.22 (46)</ispartof><rights>Copyright Centre Europeen pour la Surveillance Epidemiologique du SIDA (European Centre for the Epidemiological Monitoring of AIDS) Nov 16, 2017</rights><rights>This article is copyright of The Authors, 2017. 2017 The Authors</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c472t-afd21eb0a531702933a74cf44f842575aa33374bc4efd48ab5022e87b2e95e033</citedby><cites>FETCH-LOGICAL-c472t-afd21eb0a531702933a74cf44f842575aa33374bc4efd48ab5022e87b2e95e033</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC5718397/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC5718397/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,723,776,780,860,881,27901,27902,53766,53768</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/29162209$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Vairo, Francesco</creatorcontrib><creatorcontrib>Di Bari, Virginia</creatorcontrib><creatorcontrib>Panella, Vincenzo</creatorcontrib><creatorcontrib>Quintavalle, Giuseppe</creatorcontrib><creatorcontrib>Torchia, Saul</creatorcontrib><creatorcontrib>Serra, Maria Cristina</creatorcontrib><creatorcontrib>Sinopoli, Maria Teresa</creatorcontrib><creatorcontrib>Lopalco, Maurizio</creatorcontrib><creatorcontrib>Ceccarelli, Giancarlo</creatorcontrib><creatorcontrib>Ferraro, Federica</creatorcontrib><creatorcontrib>Valle, Sabrina</creatorcontrib><creatorcontrib>Bordi, Licia</creatorcontrib><creatorcontrib>Capobianchi, Maria Rosaria</creatorcontrib><creatorcontrib>Puro, Vincenzo</creatorcontrib><creatorcontrib>Scognamiglio, Paola</creatorcontrib><creatorcontrib>Ippolito, Giuseppe</creatorcontrib><creatorcontrib>The Outbreak Investigation Group</creatorcontrib><creatorcontrib>the Outbreak Investigation Group</creatorcontrib><title>An outbreak of chickenpox in an asylum seeker centre in Italy: outbreak investigation and validity of reported chickenpox history, December 2015-May 2016</title><title>Euro surveillance : bulletin européen sur les maladies transmissibles</title><addtitle>Euro Surveill</addtitle><description>An outbreak of chickenpox occurred between December 2015 and May 2016 among asylum seekers in a reception centre in Latium, Italy. We describe the epidemiological and laboratory investigations, control measures and validity of reported history of chickenpox infection. Serological screening of all residents and incoming asylum seekers was performed, followed by vaccine offer to all susceptible individuals without contraindication. Forty-six cases were found and 41 were associated with the outbreak. No complications, hospitalisations or deaths occurred. Serological testing was performed in 1,278 individuals and 169 were found to be susceptible, with a seroprevalence of 86.8%. A questionnaire was administered to 336 individuals consecutively attending the CARA health post to collect their serological result. The sensitivity, specificity and the positive and negative predictive value (PPV and NPV) of the reported history of chickenpox were 45.0%, 76.1%, 88.3% and 25.6%, respectively. We observed an increasing trend for the PPV and decreasing trend for the NPV with increasing age. Our report confirms that, in the asylum seeker population, chickenpox history is not the optimal method to identify susceptible individuals. Our experience supports the need for additional prevention and control measures and highlights the importance of national and local surveillance systems for reception centres.</description><subject>Adult</subject><subject>Africa - ethnology</subject><subject>Arabs - statistics & numerical data</subject><subject>Chicken pox</subject><subject>Chickenpox - diagnosis</subject><subject>Chickenpox - epidemiology</subject><subject>Chickenpox Vaccine - administration & dosage</subject><subject>Disease Outbreaks - prevention & control</subject><subject>Disease Susceptibility</subject><subject>Epidemics</subject><subject>Female</subject><subject>Humans</subject><subject>Italy - epidemiology</subject><subject>Male</subject><subject>Political asylum</subject><subject>Refugees</subject><subject>Refugees - statistics & numerical data</subject><subject>Seroepidemiologic Studies</subject><subject>Surveillance and Outbreak Report</subject><subject>Syria - ethnology</subject><subject>Travel</subject><subject>Young Adult</subject><issn>1560-7917</issn><issn>1025-496X</issn><issn>1560-7917</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpdks9u1DAQxiMEoqXwCigSlx5I8N845oCoygKVijgUzpbjTLruJvFiJyvyKH3b2m1ZFiRLM9J889N8nsmyU4xKUiPxDvMKFUJiUa6uSoJiJKRkVYlFgRAi6El2vJc8PciPshch3CDEKJLkeXZEJK4IQfI4uz0bczdPjQe9yV2Xm7U1Gxi37ndux1zHF5Z-HvIAsAGfGxgnD6l0Mel-ef-31447CJO91pN1qbHNd7q3rZ2WhPWwdX6C9pC_tmFyfnmbfwIDQxPp0REvvuklJdXL7Fmn-wCvHuNJ9vPz6sf51-Ly-5eL87PLwjBBpkJ3LcHQIM0pFohISrVgpmOsqxnhgmtNKRWsMQy6ltW64YgQqEVDQHJAlJ5kHx6427kZoL13qHu19XbQflFOW_VvZbRrde12igtcUyki4PQR4N2vOX6CGmww0Pd6BDcHhWUlWFUxLKP0zX_SGzf7MdqLKiElq7lIwI8PKuNdCB66_TAYqXQHKi1WpcWq1ZVKd6AIUaxSMbm_g4h4fWhqD_izeHoHIjuxLQ</recordid><startdate>20171116</startdate><enddate>20171116</enddate><creator>Vairo, Francesco</creator><creator>Di Bari, Virginia</creator><creator>Panella, Vincenzo</creator><creator>Quintavalle, Giuseppe</creator><creator>Torchia, Saul</creator><creator>Serra, Maria Cristina</creator><creator>Sinopoli, Maria Teresa</creator><creator>Lopalco, Maurizio</creator><creator>Ceccarelli, Giancarlo</creator><creator>Ferraro, Federica</creator><creator>Valle, Sabrina</creator><creator>Bordi, Licia</creator><creator>Capobianchi, Maria Rosaria</creator><creator>Puro, Vincenzo</creator><creator>Scognamiglio, Paola</creator><creator>Ippolito, Giuseppe</creator><general>Centre Europeen pour la Surveillance Epidemiologique du SIDA (European Centre for the Epidemiological Monitoring of AIDS)</general><general>European Centre for Disease Prevention and Control (ECDC)</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>5PM</scope></search><sort><creationdate>20171116</creationdate><title>An outbreak of chickenpox in an asylum seeker centre in Italy: outbreak investigation and validity of reported chickenpox history, December 2015-May 2016</title><author>Vairo, Francesco ; 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We describe the epidemiological and laboratory investigations, control measures and validity of reported history of chickenpox infection. Serological screening of all residents and incoming asylum seekers was performed, followed by vaccine offer to all susceptible individuals without contraindication. Forty-six cases were found and 41 were associated with the outbreak. No complications, hospitalisations or deaths occurred. Serological testing was performed in 1,278 individuals and 169 were found to be susceptible, with a seroprevalence of 86.8%. A questionnaire was administered to 336 individuals consecutively attending the CARA health post to collect their serological result. The sensitivity, specificity and the positive and negative predictive value (PPV and NPV) of the reported history of chickenpox were 45.0%, 76.1%, 88.3% and 25.6%, respectively. We observed an increasing trend for the PPV and decreasing trend for the NPV with increasing age. Our report confirms that, in the asylum seeker population, chickenpox history is not the optimal method to identify susceptible individuals. Our experience supports the need for additional prevention and control measures and highlights the importance of national and local surveillance systems for reception centres.</abstract><cop>Sweden</cop><pub>Centre Europeen pour la Surveillance Epidemiologique du SIDA (European Centre for the Epidemiological Monitoring of AIDS)</pub><pmid>29162209</pmid><doi>10.2807/1560-7917.ES.2017.22.46.17-00020</doi><oa>free_for_read</oa></addata></record> |
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subjects | Adult Africa - ethnology Arabs - statistics & numerical data Chicken pox Chickenpox - diagnosis Chickenpox - epidemiology Chickenpox Vaccine - administration & dosage Disease Outbreaks - prevention & control Disease Susceptibility Epidemics Female Humans Italy - epidemiology Male Political asylum Refugees Refugees - statistics & numerical data Seroepidemiologic Studies Surveillance and Outbreak Report Syria - ethnology Travel Young Adult |
title | An outbreak of chickenpox in an asylum seeker centre in Italy: outbreak investigation and validity of reported chickenpox history, December 2015-May 2016 |
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