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Table 2 Modified Ridley’s parasitic index [76]

From: Laboratory diagnostics for human Leishmania infections: a polymerase chain reaction-focussed review of detection and identification methods

Parasitic index

Number of amastigotes per standard section

1+

≥ 1

2+

≥ 10

3+

≥ 100

4+

≥ 1000

5+

≥ 10,000

6+

≥ 100,000