In today’s world Global Warming has been affecting nearly everything even us. The new diseases and sickness have been caused by global warming. A warmer world already seems to be producing a sicker world, health experts reported Tuesday, citing surges in Kenya, China and Europe of such diseases as malaria, heart ailments and dengue fever.
Climate changes have been affecting the amount and spread of disease by impacting the population size and range of hosts and pathogens, the length of the transmission season, and the timing and intensity of outbreaks.Certain insects like Mosquitoes in particular are highly sensitive to temperature. The mosquitoes that can carry malaria generally do not develop or breed below about 16° C, and the variety that transmits dengue fever is limited by winter temperatures below 10° C.
But extreme heat can also be a factor, and the nexus of global warming and disease really hit home for North Americans in the summer of 1999, when 62 cases of West Nile virus were reported in and around New York City. Dr. Dickson, a Columbia University public health professor, reports that West Nile Virus is spread by one species of mosquito that prefers to prey on birds, but which will resort to biting humans when its normal avian targets have fled urban areas during heat waves.
Bird flu is another example of a disease that is likely to spread more quickly as the Earth warms up. If we do not take this as serious matter the human race may be extent because of diseases.
No comments:
Post a Comment