Abstract

RODRIGUEZ DIEGO, Jesús G et al. Climate changes and their effect on some groups of parasites. Rev Salud Anim. [online]. 2013, vol.35, n.3, pp. 145-150. ISSN 0253-570X.

An analysis of the effect of climate changes on the risk of parasitic disease caused by pathogenic agents is carried out. Climatic changes appear to influence on the temporal and spatial distribution, as well as seasonal and interannual dynamics of pathogens, vectors, hosts and reservoirs. For some protozoan parasites of humans, transmitted by vectors, temperature is a critical factor that depends on the density and the capacity vector. Parasitic diseases (dog babesiosis and dog anaplasmosis, ehrlichiosis and leishmaniasis), transmitted by vector-borne, such as ixodid by hematophagous habits, have started to change their epidemiology (geographic distribution, incidence and pathogenicity). In our experience with Anocentor nitens and Amblyomma cajennese, temperature has a direct influence on the processes cotoquia and protoquia. In the second case, it was found that when temperature rises to four degrees, these events get shorter. Some helminths studied modulate the exogenous phase and when temperature rises, their population and infection rates increase. In the case of zoonotic diseases, the pathogen and vector may be present in a given area, but also the presence of different vertebrate reservoirs to humans is required, which can be a factor that restricts the geographical spread in areas where climate conditions are favorable.

Keywords : climate changes; arthropod-borne diseases; epidemiology; disease risks; parasitism.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )