BACKGROUND: To stop a possible outbreak of Legionnaires' disease (LD) at an early stage an outbreak detection programme was installed in The Netherlands. METHODS: The programme consisted of sampling and controlling of potential sources to which LD patients had been exposed during their incubation period. Potential sources were considered to be true sources of infection if two or more LD patients (cluster) had visited them, or if available patients' isolates and environmental Legionella spp. were indistinguishable by amplified fragment length polymorphism genotyping. RESULTS: Rapid sampling and genotyping as well as cluster recognition helped to target control measures. Despite these measures, two small outbreaks were only stopped after renewal of the water system. The combination of genotyping and cluster recognition lead to 29 of 190 (15%) patient-source associations. CONCLUSION: Systematic sampling and cluster recognition can contribute to outbreak detection and lead to cost-effective secondary prevention of Legionnaires' disease.
BACKGROUND: To stop a possible outbreak of Legionnaires' disease (LD) at an early stage an outbreak detection programme was installed in The Netherlands. METHODS: The programme consisted of sampling and controlling of potential sources to which LD patients had been exposed during their incubation period. Potential sources were considered to be true sources of infection if two or more LD patients (cluster) had visited them, or if available patients' isolates and environmental Legionella spp. were indistinguishable by amplified fragment length polymorphism genotyping. RESULTS: Rapid sampling and genotyping as well as cluster recognition helped to target control measures. Despite these measures, two small outbreaks were only stopped after renewal of the water system. The combination of genotyping and cluster recognition lead to 29 of 190 (15%) patient-source associations. CONCLUSION: Systematic sampling and cluster recognition can contribute to outbreak detection and lead to cost-effective secondary prevention of Legionnaires' disease.
Authors: J A C Schalk; A E Docters van Leeuwen; W J Lodder; H de Man; S Euser; J W den Boer; A M de Roda Husman Journal: Appl Environ Microbiol Date: 2012-03-30 Impact factor: 4.792
Authors: S M Euser; J P Bruin; P Brandsema; L Reijnen; S A Boers; J W Den Boer Journal: Eur J Clin Microbiol Infect Dis Date: 2013-02-22 Impact factor: 3.267
Authors: S M Euser; J P Bruin; E A Mooi-Kokenberg; M Peeters; H Verbakel; E P Yzerman; J W Den Boer Journal: Eur J Clin Microbiol Infect Dis Date: 2012-01-13 Impact factor: 3.267
Authors: N Hammami; V Laisnez; I Wybo; D Uvijn; C Broucke; A Van Damme; L Van Zandweghe; W Bultynck; W Temmerman; L Van De Ginste; T Moens; E Robesyn Journal: Epidemiol Infect Date: 2019-12-20 Impact factor: 2.451