case_images: PMC6668043_01
case_images: PMC6668043_02
case_images: Timeline of 25-week outbreak period by ward and norovirus strain type.. (
  A) All strains. Colours represent norovirus strain types determined by standard strain typing. (
  B) GII.4 strain only. Colours represent norovirus sub-strain types determined by analysis of the hypervariable P2 domain.
case_images: wellcomeopenres-4-16850-g0000.jpg
case_images: PMC6668043_02_wellcomeopenres-4-16850-g0000.jpg
case_images: f1
case_images: These specimens represented 111 episodes of illness among the 107 sampled patients ( Figure 1).