- poliovirus (polio vaccine type 1, strain LSc-2ab)
- adenovirus (type 5, strain Adenoid 75)
- papovavirus (simian virus 40, strain 777)
- vaccinia virus (strain Elstree)
Objective: The aim of this study was to determine to which extent the use of "virucidal" products for disinfection of environmental surfaces has an influence on the course of nosocomial noroviral outbreaks in comparison with the use of other disinfectants.
Methods: Data on noroviral outbreaks in five tertiary care hospitals between 2004 and 2009 were retrospectively collected. Each outbreak was characterized by its duration and the no. of persons involved. The outbreaks were grouped according to the use of "virucidal" disinfectants, "group A" designating outbreaks in which "virucidal" disinfectants were used and "group B" designating outbreaks in which other disinfectants were used.
Results: A total of 105 outbreaks were evaluated with group A comprising 42 outbreaks and group B comprising 63 outbreaks. The results of the evaluation are given in the Table below. We found no difference in outbreak duration between the two groups. However, group A outbreaks tended to involve smaller numbers of patients and healthcare workers. These differences were statistically not significant.
|Group of outbreak||Mean duration (days)||No. of patients involved||No. of HCW involved|
|A, "virucidal" disinfectants (n=42)|
|B, other disinfectants (n=63)||15.29||13.02||9.32|
Conclusions: In comparison with other products for disinfection of environmental surfaces, disinfectants categorized as "virucidal" according to DVV and RKI standards do not significantly seem to influence the course of nosocomial noroviral outbreaks.