TABLE 3.

Effect of turbidity and E. coli counts on Cryptosporidium PCR positivity of water samples

GroupnLog turbidityLog E. coli count
Mean ± SDPMean ± SDaP
Base flow
    Positive270.73 ± 0.510.052.05 ± 0.910.04
    Negative370.52 ± 0.331.50 ± 0.53
Storm flow
    Positive231.56 ± 0.52NCbNDcND
    Negative50.58 ± 0.35ND
  • a Number of colonies per 100 ml of sample.

  • b NC, a value could not be calculated due to the small sample size of the negative group.

  • c ND, not done.