| Literature DB >> 17454896 |
Benn Sartorius1, Yvonne Andersson, Inga Velicko, Birgitta De Jong, Margareta Löfdahl, Kjell-Olof Hedlund, Gorel Allestam, Claes Wångsell, Olof Bergstedt, Peter Horal, Peter Ulleryd, Ann Soderstrom.
Abstract
A large community outbreak of norovirus (NV) gastrointestinal infection occurred in Västra Götaland County, Sweden in August 2004, following attendance at recreational lakes. A frequency age-matched case control study was undertaken of persons who had attended these lakes to identify risk factors. 163 cases and 329 controls were included. Analysis indicates that having water in the mouth while swimming (OR=4.7; 95% CI 1.1-20.2), attendance at the main swimming area at Delsjön Lake (OR=25.5; 95% CI 2.5-263.8), taking water home from a fresh water spring near Delsjön lake (OR=17.3; 95% CI 2.7-110.7) and swimming less than 20 m from shore (OR=13.4; 95% CI 2.0-90.2) were significant risk factors. The probable vehicle was local contamination of the lake water (especially at the main swimming area). The source of contamination could not be determined.Entities:
Mesh：
Year: 2007 PMID： 17454896 DOI： 10.1080/00365540601053006
Source DB: PubMed Journal: Scand J Infect Dis ISSN： 0036-5548