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Table 2 Results of the evaluation of parasitic cysts in slaughtered ruminants

From: Cystic echinococcosis in northern Tanzania: a pilot study in Maasai livestock-keeping communities

District

Livestock

No. of animals inspected

No. of animals with cysts (% of inspected)

No. of cysts collecteda

No. of cysts from which DNA was extractedb

No. of species identified/successfully genotyped (%)

Echinococcus granulosus

Echinococcus hydatigena

Longido

Bovine

105

42 (40.0%)

Total = 42

Liver = 0

Lung = 41

Perit. = 1

Total = 41

Liver = 0

Lung = 41

Perit. = 0

Total = 31/41 (75.6%)

Liver = 0

Lung = 31 [27 Egss, 3 Eo, 1 Ec]

Perit. = 0

Total = 0/41 (0.00%)

Liver = 0

Lung = 0

Perit. = 0

Ovine

206

21

(10.2%)

Total = 21

Liver = 0

Lung = 11

Perit. = 10

Total = 15

Liver = 0

Lung = 6

Perit. = 9

Total = 8/12 (66.7%)

Liver = 0

Lung = 4 [4 Egss]

Perit. = 4 [2 Egss, 1 Eo, 1 Egsl]

Total = 4/12 (33.3%)

Liver = 0

Lung = 1

Perit. = 3

Caprine

241

126 (52.3%)

Total = 124

Liver = 3

Lung = 6

Perit. = 115

Total = 121

Liver = 3

Lung = 6

Perit. = 112

Total = 2/63 (3.2%)

Liver = 0

Lung = 1 [Eo]

Perit. = 1 [Eo]

Total = 61/63 (96.8%)

Liver = 0

Lung = 1

Perit. = 60

Total

552

189 (34.2%)

187

177 (94.6%)

41/116 (35.3%)

65/116 (56.0%)

Ngorongoro

Bovine

113

40 (35.4%)

Total = 49

Liver = 14

Lung = 31

Perit. = 4

Total = 35

Liver = 14

Lung = 19

Perit. = 2

Total = 28/28 (100.0%)

Liver = 10 [10 Egss]

Lung = 16 [15 Egss, 1 Eo]

Perit. = 2 [2 Egss]

Total = 0/28 (0.0%)

Liver = 0

Lung = 0

Perit. = 0

Ovine

6

1 (16.7%)

Total = 1

Liver = 0

Lung = 1

Perit. = 0

Total = 1

Liver = 0

Lung = 1

Perit. = 0

Total = 1/1 (100%)

Liver = 0

Lung = 1 [Egss]

Perit. = 0

Total = 0/1 (0.00%)

Liver = 0

Lung = 0

Perit. = 0

Caprine

26

10 (30.8%)

Total = 10

Liver = 1

Lung = 4

Perit. = 5

Total = 6

Liver = 1

Lung = 1

Perit. = 4

Total = 2/5 (40.0%)

Liver = 1 [Egss]

Lung = 0

Perit. = 1 [Egss]

Total = 3/5 (60.0%)

Liver = 0

Lung = 1

Perit. = 2

Total

145

51 (35.2%)

60

42 (70%)

31/34 (91.2%)

3/34 (8.8%)

  1. Ec Echinococcus canadensis (G6–10 genotypes), Egsl  Echinococcus granulosus sensu lato [further genotyping was not achieved], Egss Echinococcus granulosus sensu stricto (G1–G3 genotypes), Eo Echinococcus ortleppi (G5 genotype), Perit. peritoneal cysts on organ surface
  2. aOne random cyst was collected from each infected site among liver parenchyma, lungs and peritoneum
  3. bDNA was extracted from one cyst per animal. For animals with > 1 cyst collected, priority was given to the cyst collected from the liver parenchyma, followed by liver and lastly from the peritoneum