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Volume 22, Number 8—August 2016
Dispatch

Importation of Hybrid Human-Associated Trypanosoma cruzi Strains of Southern South American Origin, Colombia

Louisa A. MessengerComments to Author , Juan David Ramirez, Martin S. Llewellyn, Felipe Guhl, and Michael A. Miles
Author affiliations: London School of Hygiene and Tropical Medicine, London, UK (L.A. Messenger, M.S. Llewellyn, M.A. Miles); Universidad del Rosario, Bogotá, Colombia (J.D. Ramirez); Universidad de Los Andes, Bogotá (F. Guhl)

Main Article

Table

Population genetic parameters for Trypanosoma cruzi discrete typing units, South America, 2002–2010*

Discrete typing unit No. multilocus genotypes/no. isolates Proportion shared alleles ± SD No. polymorphic loci Mean no. private alleles per locus ± SE Mean Ar ± SE† Mean expected/observed heterozygosity† % Loci with deficit/excess heterozygosity‡
TcII
14/15 (5/6)
0.44 ± 0.23 (0.062 ± 0.053)
24 (15)
1.76 ± 0.20 (0.68 ± 0.14)
3.94 ± 0.29 (1.65 ± 0.12)
0.58/0.65 (0.91/0.58)
29.2/20.8 (40.0/0)
TcIII
13/13 (4/4)
0.48 ± 0.15 (0.30 ± 0.16)
22 (21)
2.35 ± 0.48 (1.76 ± 0.27)
4.26 ± 0.43 (2.35 ± 0.18)
0.45/0.70 (0.46/0.69)
4.5/27.3 (9.5/38.1)
TcV
8/8
0.15 ± 0.092
22
0.16 ± 0.07
2.38 ± 0.20
0.85/0.58
54.6/4.5
TcVI 21/21 (14/14) 0.24 ± 0.87 (0.22 ± 0.103) 21 (20) 0.43 ± 0.12 (0.86 ± 0.20) 2.46 ± 0.21 (1.87 ± 0.11) 0.60/0.49 (0.71/0.54) 41.7/16.7 (40.0/15.0)

*Values represent findings for reference clones derived from a range of representative hosts and vectors across South America and, in parentheses, clones isolated from humans, triatomine vectors, and sylvatic mammalian hosts in northern Colombia. Values were calculated from microsatellite data for 25 analyzed loci. Ar, allelic richness.
†Across all loci.
‡After sequential Bonferroni correction.

Main Article

Page created: July 15, 2016
Page updated: July 15, 2016
Page reviewed: July 15, 2016
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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