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Table 1 Results of CMV detection by PCR and cell culture from different sample types (saliva- and urine-associated)

From: CMV on surfaces in homes with young children: results of PCR and viral culture testing

Source

No. positive/total testeda

95% confidence interval for proportion

Mean viral load (copies/mL)

Standard deviation (copies/mL)

Median viral load (copies/mL)b

Interquartile range, Q1-Q3 (copies/mL)

No. positive/total cultures

Saliva

73/131 (56%)

47–64%

1.15 × 107

3.01 × 107

2.08 × 105

1.07 × 104–3.42 × 106

44/54 (81%)

Spoon

39/131 (30%)

22–38%

5.86 × 106

2.45 × 107

5.47 × 104

1.55 × 104–4.26 × 105

10/20 (50%)

Cheek

38/130 (29%)

22–39%

1.22 × 106

4.76 × 106

5.25 × 104

1.20 × 104–3.80 × 105

4/16 (25%)

Wash cloth

25/131 (19%)

13–27%

2.53 × 105

6.10 × 105

7.83 × 104

1.39 × 104–1.27 × 105

3/12 (25%)

Urine

20/128 (16%)

10–23%

1.05 × 105

1.10 × 105

5.46 × 104

2.57 × 104–1.43 × 105

Not done

Hands

18/131 (14%)

8–21%

4.05 × 104

3.65 × 105

9.12 × 103

6.11 × 103–1.67 × 104

1/14 (7%)

Changing area

16/131 (12%)

7–19%

2.83 × 104

3.01 × 104

1.41 × 104

8.36 × 103–3.96 × 104

1/8 (13%)

  1. aDifferences in the percentage of PCR-positive results were significant (P < 0.05, Cochran-Mantel-Haenszel test) for the following pairs: Saliva compared to every other source; Spoon and cheek compared to urine, hands and changing area. bMedian viral loads were significantly different (P < 0.05, Wilcoxon rank-sum test) for the following pairs: Saliva, spoon, cheek, washcloth and urine compared to hands and changing area