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Table 1 Comparison of intestinal parasite detection by stool qPCR and microscopy in 99 subjects

From: Identification of human intestinal parasites affecting an asymptomatic peri-urban Argentinian population using multi-parallel quantitative real-time polymerase chain reaction

Parasite No. positive by multi-parallel qPCR (%) No. positive by concentration microscopy (%) No. positive by McMaster microscopy (%) DNA concentrations (fg/μL) in stool positive by microscopy, median (range) DNA concentrations (fg/μL) in stool negative by microscopy, median (range)
Ascaris lumbricoides 56/99 (56.5) 53/99 (53.5) 47/99 (47.5) 1.02 (0.001 – 42.3) 0.48 (0.003–10.431)
Cryptosporidium parvum/hominis 0/99 (0) NA NA NA NA
Ancylostoma duodenale 19/99 (19.1) NA NA 55.1 (5.87–278.2)a 106.9 (26.2–384.2)
Necator americanus 36/99 (36.4) NA NA 12.5 (0.024–278.2)a 1.59 (0.001–239.5)
Hookworm* 37/99 (37.4) 21/99 (21.2)a 21/99 (21.2)a NA NA
Strongyloides stercoralis* 21/99 (21.2) 3/99 (3.0) NA 65.9 (14.7–123.6) 0.22 (0.0009–48.6)
Giardia lamblia* 63/99 (63.6) 8/99 (8.1) NA 5.27 (0.02–1847.4) 0.27 (0.007–5697.8)
Entamoeba histolytica 1/99 (1.0) 0/99 (0) NA 0.003 0
Trichuris trichiura 1/99 (1.0) 4/99 (4.0) 6/99 (6.1) 0.001 0
  1. NA Not applicable
  2. *Indicates statistically significant difference (P < 0.05)
  3. aMicroscopy is unable to distinguish between the two hookworm species, A. duodenale and N. americanus