author(s)
Kusum Lata, Giridhari Das, Rupesh Verma and RPS Baghel

abstract
Climate change is a reality which may explain the increase in density of arthropod vectors, but also of their hosts, changes in periods of activity and variations in geographical distribution. Climate change and ecological disturbances have exerted a marked influence on the emergence and proliferation of parasitic diseases. Each environmental change, whether occurring as a natural phenomenon or through human intervention, changes the ecological balance and context within which disease hosts or vectors and parasites breed, develop and transmit disease. Vector-borne diseases are among the major microbial causes of morbidity and mortality in the world today affecting nearly half of the world’s population. Much of the impact of climate on vector-borne diseases can be explained by the fact that the arthropod vectors of these diseases are vector- borne which are unable to regulate their own internal temperature and therefore highly dependent on climate for survival and development. Temperature, precipitation, humidity and other climatic factors are known to affect the reproduction, development, behaviour and population dynamics of the arthropod vectors of these diseases. Adapting to the effects of global climate change will require the development of adequate response plans, enhancement of surveillance systems and development of effective appropriate strategies to reduce the climate- related vector and vector–borne parasitic diseases. This paper aims to discuss the impact of climate variability on occurrence and distribution of vector and vector-borne parasitic diseases.