The SRSV or small round structured virus is a virus that causes gastroenteritis. It is commonly referred to as the "winter vomiting bug" as it is most prominent at that time of year. In common with Ireland, some other European countries are experiencing outbreaks of the virus. This virus can easily spread through person to person contact. It can also be spread through the air, hence it is difficult to contain. Since the illness lasts about two days and is highly infectious the assessment of its prevalence changes constantly. Where outbreaks have occurred, hospitals have put full infection control measures in place in line with best practice guidelines. Hospitals have been co-operating and supporting each other to deliver both emergency and elective services during the recent outbreak.