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Table 1 Proportions of egg viability in colon tissues of mice infected with S. japonicum and with or without PZQ treatment

From: Clinical diagnostic value of viable Schistosoma japonicum eggs detected in host tissues

 

Days post-infection

Days post-treatment with PZQ

45d

90d

180d

30d

90d

180d

Mouse numbers

6

6

6

6

6

6

Worm burden

Mean ± SD

17.2 ± 3.3

7.6 ± 1.7

4.5 ± 0.7

0

0

0

male-female worms pairs

8.4

3.8

1.6

0

0

0

Eggs in colon biopsies

(total of 30 biopsies)

4666

4840

4532

4497

2320

1587

The proportion of different types of eggs

Immature eggs

(total)*

39.4%

(1840)

19.8%

(960)

14.7%

(666)

1.1%

(49)

0

0

Mature eggs

(total)*

51.7%

(2412)

34.0%

(1644)

20.8%

(943)

1.7%

(75)

0

0

Partially degraded eggs (total)

8.9%

(414)

11.7%

(568)

18.6%

(843)

54.2%

(2436)

12.8%

(296)

11.1%

(176)

Completely degraded eggs (total)

0

29.6%

(1433)

35.6%

(1613)

18.8%

(845)

72.5% (2024)

88.9%

(1411)

Unknown viability type

(total)

0

4.9%

(235)

10.1%

(467)

27.0%

(1216)

14.7%

(342)

0

  1. * Immature eggs and mature eggs were judged to be live or viable by morphology