A Waterborne Gastroenteritis Outbreak Caused by a GII Norovirus in a Holiday Camp in Catalonia (Spain), 2017
Por:
Carol, M, Guadalupe-Fernandez, V, Rius, C, Soldevila, N, Razquin, E, Guix, S, Dominguez, A
Publicada:
1 sep 2021
Resumen:
On 2 February 2017, Epidemiological Surveillance Services were notified of an outbreak of acute gastroenteritis (AGE) among schoolchildren who had taken part of a school trip from 30 January to 3 February 2017 at a holiday camp in Catalonia. A retrospective cohort study was performed to identify the causative agent, estimate the magnitude of the outbreak and identify its source, as well as to determine the route of transmission. Data collected by standardised questionnaires identified 41 episodes of AGE among 174 individuals who attended the camp. Cases had mainly symptoms of abdominal pain (73.8%), nausea (64.3%), vomiting (54.8%), diarrhoea (45.2%) and headache (42.9%). Consumption of water was associated with gastroenteritis (crude RR: 1.72, 95%CI: 1.01-2.92; adjusted RR: 1.88, 95%CI 1.03-3.56). NoV GII was detected in faeces (5 out of 13) and water samples. Additionally, faecal indicator bacteria and protozoa were detected in water samples. The outbreak showed a high attack rate and was caused by a natural water fountain not properly treated and not monitored for safety quality. There could have been a discharge of wastewater at a point close to the fountain; however, the source of contamination of the water could not be identified. Health education may be useful to eliminate risks associated with the consumption of untreated water from natural fountains.
Filiaciones:
Carol, M:
Generalitat Catalonia, Publ Hlth Agcy Catalonia, Subdirectorate Gen Surveillance & Response Publ H, Barcelona 08005, Spain
Guadalupe-Fernandez, V:
Generalitat Catalonia, Publ Hlth Agcy Catalonia, Subdirectorate Gen Surveillance & Response Publ H, Barcelona 08005, Spain
Rius, C:
Publ Hlth Agcy Barcelona ASPB, Epidemiol Serv, Barcelona 08023, Spain
Inst Salud Carlos III, CIBER Epidemiol & Salud Publ CIBERESP, Madrid 28029, Spain
Soldevila, N:
Inst Salud Carlos III, CIBER Epidemiol & Salud Publ CIBERESP, Madrid 28029, Spain
Univ Barcelona UB, Med Dept, Barcelona 08036, Spain
Razquin, E:
Lab Barcelona Publ Hlth Agcy ASPB, Barcelona 08001, Spain
Guix, S:
Univ Barcelona UB, Sch Biol, Inst Nutr & Food Safety INSA, Dept Genet Microbiol & Stat,Enter Virus Lab,Sect, Barcelona 08028, Spain
Dominguez, A:
Inst Salud Carlos III, CIBER Epidemiol & Salud Publ CIBERESP, Madrid 28029, Spain
Univ Barcelona UB, Med Dept, Barcelona 08036, Spain
Green Published, gold
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