Table 4.

Microbial parameters of river water samples

Sample description (year collected)PCR resultaEnterovirus on cell culturebConcn of fecal coliformsc
HAdHAVEV
Site 1 (1995)
 January+06,800
 February+01,000
 March++0200
 May04,200
 June039,000
 August043,000
 September++03,800
 October06,000
 November+02,400
 December++03,200
Site 1 (1996)
 February+04,400
 March+++010,000
 April+++21,000
 May++02,950
 June02,800
 July+++016,000
 September0NTd
 October++0900
 November+++0NT
 December++0NT
Site 2 (1996)
 January++0<10
 April0<10
 July0<10
  • a Results obtained by nested PCR analysis of 2 ml of concentrate (corresponding to 2 liters of river water) for the detection of adenovirus, and 1 ml of concentrate (corresponding to 1 liter of river water) for the detection of enterovirus or HAV. HAd, human adenovirus; EV, enterovirus.

  • b Enterovirus PFU obtained from 20 ml of concentrate (equivalent to 20 liters of river water) on BGM cells.

  • c Results expressed as CFU/100 ml.

  • d NT, not tested.