Volume 12, Number 4—April 2006
Research
Human Trypanosoma cruzi Infection and Seropositivity in Dogs, Mexico
Jose G. Estrada-Franco*1, Vandanajay Bhatia*1, Hector Diaz-Albiter†, Laucel Ochoa-Garcia†, Alberto Barbabosa‡, Juan C. Vazquez-Chagoyan‡, Miguel A. Martinez-Perez‡, Carmen Guzman-Bracho§, and Nisha Garg*
Table 3
Prevalence of antibodies to Trypanosoma cruzi in dogs in the southern area of the State of Mexico
| Municipality | Village | No. screened | Seropositivity,* no. (%) |
||
|---|---|---|---|---|---|
| IgG positive† | IgM positive‡ | IgG and IgM positive | |||
| Tejupilco | El Carmen Ixtapan | 16 | 5 (31.3) | 0 | 5 (31.3) |
| Rincon del Carmen | 42 | 10 (23.8) | 13 (30.9) | 16 (38.0) | |
| Rio Grande | 24 | 1 (4.2) | 0 | 1 (4.2) | |
| Tejupilco | 10 | 1 (10.0) | 0 | 1 (10.0) | |
| Zacatapec | 22 | 1 (4.5) | 0 | 1 (4.5) | |
| Subtotal | 114 | 18 (15.8) | 13 (11.4) | 24 (21.0) | |
| Toluca | 80 | 8 (10.0) | 12 (15.0) | 14 (17.5) | |
| Northern area§ | 24 | 0 | 0 | 0 | |
| Chiapas | 28 | 11 (39.3) | 4 (14.3) | 12 (42.8) | |
*IgG, immunoglobulin G. p<0.001 for IgG, IgM, and IgG plus IgM seropositivity.
†IgG-seropositive dogs were 8 mo to 6 y of age; 85% were >2 y of age.
‡IgM-seropositive dogs were 4 months to 6 years of age; a similar distribution was observed in all age groups.
§Northern villages of Apaxco, Hueypoxita, Jaltenco, and Nextlalpan were included in this group.
1These authors contributed equally to this work.
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