The prevalence of helminth species in stray dogs, from the capital city of the state of Queretaro, was evaluated. A total of 378 dogs were captured and examined for the presence of helminths from January to December 2008. The results showed that 275 (72.8%) of examined dogs were infected with one or more helminth species. Single infections were observed in 139 (50.5%) of infected dogs and 136 (49.5%) harboured mixed infections. Out of the 378 dogs examined, 208 (55.2%) presented nematodes and 182 (48.1%) cestodes. The prevalences (confidence interval) and mean intensities of infection ( ± SD) of nematodes and cestodes encountered were:Ancylostoma caninum42.9% (37.9–47.8) and 22.1 ( ± 34.3);Toxocara canis15.1% (11.8–19.0) and 8.3 ( ± 15.0);Spirocerca lupi4.5% (2.7–7.1) and 3.9 ( ± 4.8);Toxascaris leonina2.3% (1.1–4.5) and 4.8 ( ± 3.5);Physaloptera praeputialis1.9% (0.8–3.8) and 9.7 ( ± 14.9);Dirofilaria immitis1.3% (0.4–3.1) and 5.6 ( ± 2.1);Oslerus osleri0.3% (0.0–1.6) and 5 ( ± 0.0);Dipylidium caninum44.9% (40.0–50.0) and 18.1 ( ± 27.7);Taeniaspp. 6.9% (4.7–9.9) and 6.9 ( ± 7.1). There were no significant differences in prevalences observed either between female (68.5%) and male (76.8%) or between young (70.6%) and adult (74.2%) animals. No differences were observed in the ANOVA test for the mean intensity of infection of any of the parasites (P>0.05).

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During the last decade, the production of geospatial information has increased considerably; however, managing and sharing this information has become increasingly difficult for the organizations that produce it, because it comes from different data sources and has a wide variety of users. In this sense, to have a better use of geospatial information, several countries have developed national spatial data infrastructures (SDIs) to improve access, visualization, and integration of their data and in turn, have the need to cooperate with other countries to develop regional SDIs, which allow better decision making with regional impact. However, its design and development plan requires, as a starting point, to knowing the level of development of the national SDIs to identify the strengths and gaps that exist in the region. This document presents the methodology developed and the results obtained from the evaluation of the status of implementation of the SDI components in each of the member countries of the Regional Committee of United Nations on Global Geospatial Information Management for the Americas (UN-GGIM: Americas), which will contribute to the equal development of SDIs in an integrated and collaborative way in the Americas.

Nº 19 Junio 2010 Página 2 influencia que en esta evolución tiene el entorno familiar y comunitario. Es por ello que consideramos que el papel de Enfermería puede ser fundamental, en los niveles de diagnóstico precoz, prevención secundaria, tratamiento y rehabilitación.