FIG 2.

Infectious FRNAPH-I (dark gray bar), FRNAPH-II (light gray bar), and undetermined phage (white) concentrations estimated by relating phage plaque genotyping results to the total FRNAPH, as well as E. coli (black circles) and enterococcal (black triangles) concentrations detected in water samples collected from the 4 study areas. For each sample, FRNAPH, NoV GI, and NoV GII genome detection results are also given. Only qualitative information is given for FRNAPH genomes (presence [+] or absence [−]). HuNoV genome concentrations are expressed in genome copies per 100 ml of water; −, HuNoV genomes undetected; +, HuNoV genome concentrations above the detection limit but unquantifiable (<100 gc/100 ml).