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. 2018 Feb 1;221(3):479–488. doi: 10.1016/j.ijheh.2018.01.012

Table 4.

Ct values and estimated numbers of genomes of enteric viruses per milliliter of water in untreated and treated sewage samples from three weeks in 2015, where K numbers indicate the internal sample numbers.

Virus Week 49
Week 50
Week 51/52
K399 K400 K401 K402 K416 K417 K418 K419 K462 K463 K464 K465
Inlet
sewage
Conven-tionally treated Ozone
treated
Outlet after dam Inlet
sewage
Conven-tionally treated Ozone
treated
Outlet after dam Inlet sewage Conven-tionally treated Ozone
treated
Outlet after dam
Adenovirus Ct value 27.1# 34.7 30.6 36.0 33.0 34.4 35.6 36.7 32.1 36.9 40.3 39.7
Viral genomes/mL 260,000 1300 24,000 530 4200 1600 720 330 7900 290 27 40
Norovirus GI Ct value 30.0 -* 35.6 29.7
Viral genomes/mL 36,000 730 43,000
Norovirus GII Ct value 29.1 36.5 39.1 38.3 32.1 38.6 28.9 36.1 38.7
Viral genomes/mL 65,000 390 61 11 8400 88 76,000 50 80
Sapovirus Ct value 26.6 31.4 27.1
Viral genomes/mL 380,000 14,000 270,000
Parechovirus Ct value 33.6 35.3 35.4
Viral genomes/mL 2800 850 780
HEV Ct value 39.6
Viral genomes/mL 45
Astrovirus Ct value 28.8 25.3 25.0 37.5
Viral genomes/mL 81,000 960,000 1,100,000 180

#: mean Ct value (Ct = cycle threshold in the quantitative PCR).

*: Undetected.