On quantitative assessment of microbe risk caused by exposure to enteric viruses in drinking water

The authors assessed microbiological risks of acute intestinal infections (AII) with viral etiology caused by drinking water taken from centralized water supply systems among overall urban population in Arkhangelsk region over 2006-2017. The research was performed with Quantitative Microbial Risk Assessment (QMRA) procedure. It was revealed that acute intestinal viral infections prevailed among intestinal infections; the most widely spread ones were rotavirus infection (86.9%), norovirus infection (7.7%), and enterovirus infection (3.7%). The authors also performed comparative analysis of spatial distribution and long-term dynamics of incidence with AII which were possibly caused by infectious agents entering a body with water. The analysis revealed that rotavirus and norovirus infections frequently occurred in Arkhangelsk, Novodvinsk, Koryazhma, and Kotlas. Incidence with rotavirus infection among population in Koryazhma and Arkhangelsk grew 1.5-1.6 times faster than epidemiological processes on the reference territory. Coliphages contents were equal to Р95in drinking water taken from centralized