Infectious diseases and climate change
Now a day there is an apparent increase in many infectious diseases, which includes AIDS, hepatitis C, SARS, etc. This reflects the combined impacts of rapid demographic, environmental, social, technological and other changes in our lifestyle. Vectors, pathogens and hosts each can survive and reproduce within a specific range of optimal climatic conditions. Human exposure to different waterborne infections occurs by contact with contaminated drinking water, recreational water, or food. This may result from human actions, such as improper disposal of sewage wastes, or be due to climate change. Rainfall can influence the transport and transmission of infectious agents, while temperature affects growth and survival of them.