Fig. 1From: What proportion of care home outbreaks are caused by norovirus? An analysis of viral causes of gastroenteritis outbreaks in care homes, North East England, 2016–2018Care home gastroenteritis outbreaks by month and year, North East England, 2016–2018. a Total number of outbreaks. b Percentage of outbreaks with a faecal sample submitted, with loess regression smoothed line (blue line) and 95% Confidence Interval (grey). c Percentage of outbreaks with a positive norovirus sample, with loess regression smoothed line (blue line) and 95% Confidence Interval (grey)Back to article page