what are vector borne diseases and how to cope with them in country such as bangladesh and india?

Answer 1

A vector-borne disease is one in which the pathogenic microorganism is transmitted from an infected individual to another individual by an arthropod or other agent, sometimes with other animals serving as intermediary hosts. The transmission depends upon the attributes and requirements of at least three different living organisms: the pathologic agent, either a virus, protozoa, bacteria, or helminth (worm); the vector, which are commonly arthropods such as ticks or mosquitoes; and the human host. In addition, intermediary hosts such as domesticated and/or wild animals often serve as a reservoir for the pathogen until susceptible human populations are exposed.

The transmission of many infectious diseases is affected by climatic factors. Infective agents and their vector organisms are sensitive to factors such as temperature, surface water, humidity, wind, soil moisture, and changes in and forest distribution. This applies particularly to vector-borne diseases (VBD) like malaria. It is therefore projected that climate change and altered weather patters would affect the range (both altitude and latitude), intensity, and seasonality of many vector-borne and other infectioius diseases. In general, increased warmth and moisture would enhance transmission of VBDs. However, it should be noted that any such climate-related redistribution of disease may also entail, perhaps in conjunction with other environmental stresses, some localized reductions in rates of infection.

In tropical countries, VBDs are a major cause of illness and death. For the major VBDs, estimates of numbers of people at risk and infected. While the potential transmission of many of these diseases increase in response to climate change, the capacity to control the diseases will also change. New or improved vaccination can be expected; some vector species can be constrained by use of pesticides. Nevertheless, there are uncertainties and risks here, too: for example long term pesticide use breeds resistant strains and kills many predators of pests.

Answer 2

Vector borne diseases are those in which the causative organism is spread by an insect or animal. Malaria, dengue fever and Leishmaniasis (Kala Azar) are examples. The way to cope is to destroy the insect vector or prevent bites. Use mosquito repellent, destroyers and mosquito nets. Wear protective clothing to prevent sandfly bites.

Answer 3

Vector borne diseases are diseases that are carried by some kind of parasite (say a mosquito) an example would be malaria.

Your best hope is to make sure you are immunized before you leave and protect yourself from bugs.