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Climate change is affecting the distribution of these diseases due to the expanding geographic range and seasonality of these diseases and their vectors. [ 5 ] : 9 Though many infectious diseases are affected by changes in climate, vector-borne diseases, such as malaria, dengue fever and leishmaniasis, present the strongest causal relationship.
Malaria deaths declined steadily between 2000 and 2019, from 864,000 to 576,000. They rose during the pandemic, and an estimated 608,000 people died of the disease last year, mainly young children.
Climate patterns influence the lifespan of mosquitos as well as the rate and frequency of reproduction. Climate change impacts have been of great interest to those studying these diseases and their vectors. [64] Additionally, climate impacts mosquito blood feeding patterns as well as extrinsic incubation periods. [58]
Climate change is likely to affect malaria transmission, but the degree of effect and the areas affected is uncertain. [234] Greater rainfall in certain areas of India, and following an El Niño event is associated with increased mosquito numbers. [235] Since 1900 there has been substantial change in temperature and rainfall over Africa. [236]
When a small number of cases of locally transmitted malaria were found in the United States last year, it was a reminder that climate change is reviving or migrating the threat of some diseases ...
Pakistan witnessed the highest global increase in cases, with Ethiopia, Nigeria, Papua New Guinea and Uganda closely following suit.
Climate change is altering the geographic range and seasonality of some insects that can carry diseases, for example Aedes aegypti, the mosquito that is the vector for dengue transmission. Global climate change has increased the occurrence of some infectious diseases. Infectious diseases whose transmission is impacted by climate change include, for example, vector-borne diseases like dengue ...
Scientific limitations when examining shifting malaria transmission rates in the African Highlands are similar to those related to broader understandings of climate change and malaria. While modeling with temperature changes shows that there is a relationship between an increase in temperature and an increase in malaria transmission ...