Mayoral Cortés, JMPérez Morilla, EGallardo García, VNavarro Marí, JMPérez Ruiz, MHermosilla, RDíaz-Borrego, JRodríguez Romero, ERuiz Fernández, J2013-01-172013-01-172012-10-12Mayoral Cortés JM, Pérez Morilla E, Gallardo García V, Navarro Marí JM, Pérez Ruiz M, Hermosilla R, et al. Measles outbreak in Andalusia, Spain, January to August 2011. Euro Surveill. 2012;17(42):pii=203001025-496Xhttp://hdl.handle.net/10668/743Journal Article;On 7 January 2011, a six year-old child living in a Roma community near Seville, southern Spain, was hospitalised with measles. Contact tracing identified a probable index case with onset of symptoms on 20 December 2011 and several unreported cases among children under the age of 15 years in the same town. The outbreak initially spread in districts in the city of Seville with a high proportion of Roma residents, and later to other cities and towns in Andalusia. While some towns experienced wide spread of the disease with significant clusters of cases, most of the affected locations saw non-clustered cases or very few secondary cases. The outbreak resulted in 1,759 confirmed or probable cases of which 393 (19%) required hospitalisation. Measles virus of genotype D4 was diagnosed in more than half of the cases. Significant differences (p<0.0001) by age group were found between clustered and non-clustered cases. The highest proportion of clustered cases occurred in the age group of 5-14 yearolds, while the highest proportion of non-clustered cases was seen in those older than 29 years. The last confirmed case related to this outbreak was reported on 20 August 2011.enSarampiónBrotes de enfermedadesVigilancia epidemiológicaTrazado de contactoAndalucíaMedical Subject Headings::Diseases::Virus Diseases::RNA Virus Infections::Mononegavirales Infections::Paramyxoviridae Infections::Morbillivirus Infections::MeaslesMedical Subject Headings::Health Care::Environment and Public Health::Public Health::Disease OutbreaksMedical Subject Headings::Named Groups::Persons::Age Groups::ChildMedical Subject Headings::Named Groups::Persons::Age Groups::AdultMedical Subject Headings::Health Care::Environment and Public Health::Public Health::Epidemiologic Methods::Contact TracingMedical Subject Headings::Health Care::Environment and Public Health::Public Health::Epidemiologic Methods::Statistics as Topic::Cluster AnalysisMedical Subject Headings::Health Care::Environment and Public Health::Public Health::Disease OutbreaksMedical Subject Headings::Health Care::Environment and Public Health::Public Health::Public Health Practice::Communicable Disease Control::Disease NotificationMedical Subject Headings::Geographicals::Geographic Locations::Europe::Spainresearch article23098824open access1560-7917