Involvement of Workers in Closed and Semiclosed Institutions in Outbreaks of Acute Gastroenteritis Due to Norovirus
Por:
Parron, I, Barrabeig, I, Alseda, M, Cornejo-Sanchez, T, Guix, S, Jane, M, Izquierdo, C, Rius, C, Dominguez, A
Publicada:
1 dic 2020
Resumen:
Norovirus outbreaks frequently occur in closed or semiclosed institutions. Recent studies in Catalonia and various countries indicate that, during outbreaks in these institutions, norovirus is detected in between 23% and 60% of workers, and the prevalence of infection in asymptomatic workers involved in outbreaks ranges from 17% to 40%. In this work, we carried out a prospective study to investigate the involvement of workers in closed and semiclosed institutions during outbreaks. The attack rates (ARs) and the rate ratios (RRs) were calculated according to the type of transmission and occupational category. The RRs and 95% confidence intervals (CIs) between workers and users were calculated. The mean cycle of quantification (Cq) values were compared according to the genogroup and the presence of symptoms. ARs were higher in person-to-person transmission than in common vehicle outbreaks, and 38.8% of workers were symptomatic. The RR between workers and users was 0.46 (95% CI 0.41-0.52). The ARs in workers were high, particularly in workers with closer contact with users. The mean Cq was lower in patients than in asymptomatic infected persons, although the difference was only significant for genogroup I (GI). The frequency of asymptomatic infected persons suggests that personal hygiene measures should be followed by all workers in the centers affected.
Filiaciones:
Parron, I:
Dept Salut, Sub Direccio Reg Barcelona, Barcelona 08005, Spain
Barrabeig, I:
Dept Salut, Sub Direccio Reg Barcelona, Barcelona 08005, Spain
Inst Salud Carlos III, CIBER Epidemiol & Salud Publ, Madrid 28029, Spain
Alseda, M:
Dept Salut, Sub Direccio Reg Lleida, Lleida 25006, Spain
Cornejo-Sanchez, T:
Vall dHebron Hosp, Dept Microbiol, Barcelona 08035, Spain
Guix, S:
Univ Barcelona, Inst Nutr & Food Safety, Dept Genet Microbiol & Stat, Sect Microbiol Virol & Biotechnol,Sch Biol,Enter, Barcelona 08028, Spain
Jane, M:
Inst Salud Carlos III, CIBER Epidemiol & Salud Publ, Madrid 28029, Spain
Sub Direccio Gen Vigilancia & Resposta Emergencie, Barcelona 08005, Spain
Univ Barcelona, Dept Med, Barcelona 08036, Spain
Izquierdo, C:
Sub Direccio Gen Vigilancia & Resposta Emergencie, Barcelona 08005, Spain
Rius, C:
Inst Salud Carlos III, CIBER Epidemiol & Salud Publ, Madrid 28029, Spain
Agencia Salut Publ Barcelona, Barcelona 08023, Spain
Dominguez, A:
Inst Salud Carlos III, CIBER Epidemiol & Salud Publ, Madrid 28029, Spain
Univ Barcelona, Dept Med, Barcelona 08036, Spain
Gold, Green Published
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