Table 1. Comparison of the L. infantum parasite loads, and their degree of aggregation, in sympatric dog and fox populations in Amazon Brazil.

	n	mean	median	IQR	range	k (95% CL)
samples from infected dogs
BM	265	1.0×105	142	4–4194	0–2.4×106	0.104 (0.091–0.120)
skin	185	2.7×106	119	0–8670	0–1.3×108	0.066 (0.056–0.079)
means for each infected dog
BM	82	1.3×105	1712	18–23835	0–2.2×106	0.138 (0.108–0.175)
skin	64	3.9×106	412	16–17936	0–1.3×108	0.077 (0.058–0.102)
samples from infected foxes
BM	67	2.9×104	0	0–1744	0–1.1×106	0.042 (0.029–0.062)
skin	53	8.4×104	0	0–349	0–1.8×106	0.047 (0.031–0.070)
means for each infected fox
BM	34	2.5×104	12	0–2167	0–5.3×105	0.057 (0.034–0.094)
skin	30	6.3×104	41	0–2893	0–8.3×105	0.076 (0.048–0.121)

Statistics shown for individual samples and for means of all samples from each animal. Parasite values are expressed as number/mL (BM bone marrow) and number/gram (ear skin). IQR interquartile range; k negative binomial over-dispersion statistic (CL confidence limits).