@article {CysneirosPA2576, author = {Ana Cysneiros and Francisca Lopes and Joao Carvalho and Patricia Dionisio and Christine Costa and Bruno Von Amann and Ana Dias and Gustavo Carvalho and Margarida Serrado and Filipe Froes and Cristina Barbara}, title = {Legionella score performance under an outbreak of Legionnaires{\textquoteright} disease}, volume = {46}, number = {suppl 59}, elocation-id = {PA2576}, year = {2015}, doi = {10.1183/13993003.congress-2015.PA2576}, publisher = {European Respiratory Society}, abstract = {Background: An outbreak of Legionnaires{\textquoteright} disease with 334 confirmed cases was identified in November 2014 in Northern suburban Lisbon, Vila Franca de Xira, Portugal. As part of the team working in the Hospitals that cared for these patients, the authors decided to apply the Legionella Score proposed by Fiumefreddo et al in 2009. This clinical predictor score uses 6 variables (CRP \>187 mg/L; Na+\<133 mmol/L; T \>39.4{\textdegree}C; platelet count \<171x109/L; LDH \>225 U/L; dry cough). Score \<2 are considered negative and \>4 positive for Legionnaires{\textquoteright} disease. One of the foreseen advantages was its use in ruling out Legionnaires{\textquoteright} disease.Objectives: To assess how the Legionella score performed under an outbreak setting.Methods: We applied a questionnaire to all 53 cases of suspected or confirmed Legionnaires{\textquoteright} disease during their admission to our respiratory department. Confirmed cases were defined as pneumonia with laboratory confirmation of Legionella pneumophila (serogroup 1), symptom onset occurring after October 1st and epidemiological link to Vila Franca de Xira. Suspected cases were clinically similar to confirmed cases, had an epidemiological link but lacked laboratory confirmation.Results: Of the 53 cases the mean score was 3.6, positive in 11 cases and negative in 2 cases. Of the 41 confirmed cases the mean score was 3.9 (max: 6; min: 2), score was positive in 10 cases (24.4\%), negative in none and importantly it was not positive in 75.6\% of confirmed cases. In the 12 suspected cases the mean score was 2.6 (max: 5; min: 1), positive in 1 case and negative in 2 cases (16.7\%).Conclusion: Although in our population the score did not exclude any confirmed case, it did not prove useful in clinical management.}, issn = {0903-1936}, URL = {https://erj.ersjournals.com/content/46/suppl_59/PA2576}, eprint = {https://erj.ersjournals.com/content}, journal = {European Respiratory Journal} }