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Showing posts with label Aedes aegypti. Show all posts
Showing posts with label Aedes aegypti. Show all posts

Sunday, October 17, 2021

Efforts to prevent many life threatening diseases spreading by mosquitoes…

Increasing the immunity in mosquitoes shown a hope to prevent many diseases from the biting of mosquitoes. Scientists are trying to prevent diseases like Zika, Dengue, Malaria, Chikungunya, etc. that are spreading through mosquito biting. It is observed that by giving sugar to mosquitoes, the virus will not be able to infect them and diseases will not spread. The incidence of diseases like Zika and Dengue can be reduced by developing anti-viral immunity in mosquitoes. 

In their new experiment, scientists have developed immunity against the virus that spreads these diseases in mosquitoes. Scientists from Switzerland's MRC University of Glasgow Center for Virus Research, who studied, say that after feeding sugar to female Aedes aegypti mosquito that spreads diseases, the virus is not able to spread its infection in them. In this way, they are not able to transmit the virus to humans, and the risk of diseases decreases. 

Why do mosquitoes spread diseases like dengue? Mosquitoes depend on flower nectar for their energy, but they need blood for reproduction. To get this blood, they bite humans. During this time, the virus of diseases like Zika and Dengue present in them reaches humans. Researcher Dr. Emily Pondeville observed, after eating sugar, immunity against the virus increases in mosquitoes, but the reason why this happens is still not clear. However, this can reduce the cases of mosquito-borne diseases worldwide.

How deadly are mosquitoes proving to be? According to the World Mosquito Program, 700 million people worldwide get sick every year from mosquito bites. Of these, 10 lakh people die. Cases of Zika, Yellow Fever, Chikungunya, Malaria, and Dengue are reported in the maximum number of patients. According to the European Center for Disease Control Prevention, the number of yellow fever mosquitoes has increased so much in the last 20 to 30 years that they have become among the most disease-carrying mosquitoes. 

Dengue cases increased 30 times in 50 years- According to the World Health Organization (WHO), the dengue virus infects approx. 400 million people every year and about 25 thousand people die from it. According to the WHO, dengue cases have increased by 30 times in the last 50 years. Dengue virus causes fever and body aches after infection.

Wednesday, October 13, 2021

Interesting Research on Mosquito biting to human...

Male mosquitoes find humans from 10 meters away, they do not suck human blood, yet why do they hover around them.  As per scientists’ views, Mosquitoes buzzing around in the ear are always annoying, but they don't always come to bother you. Especially, male mosquitoes, because they do not suck human blood. The female mosquito only does the work of infecting by sucking human blood. 

New research says, male mosquitoes are attracted by female mosquitoes and female mosquitoes go to humans, so male mosquitoes also go near to humans but the purpose was not to suck the blood but meet to the female mosquitoes. Do you know? what interesting things related to mosquitoes were revealed in recent research? 

First, let us know, How do these mosquitoes find humans? Scientists say that mosquitoes find humans only from a distance of about 10 meters. The reason for this is carbon-di-oxide ie CO2. Humans take in oxygen and release carbon-di-oxide. Mosquitoes, looking for the source of this CO2, reach humans within a few seconds and start biting. However, the work of biting humans is done by the female mosquito. 

Male mosquitoes depend on the sap of flowers to satisfy their hunger. New research says that even though male mosquitoes do not suck human blood, they are no less than female mosquitoes. According to research published in the Journal of Medical Entomology, until now it was believed that male mosquitoes do not roam around humans, but this is not so. 

In recent research, It has also been proved. Scientists say, to find out that male mosquitoes also hover around humans, an experiment on Aedes aegypti species was done. Only male mosquitoes of this species were released in one yard. These were monitored with the help of cameras. It was proved during research that they are attracted to humans. At the same time, the female mosquito flies away after sucking the blood of a human. 

Research says, male mosquitoes hang around humans for a long time and rarely sit anywhere. Why do they go to humans when they do not suck blood? Why do male mosquitoes approach humans when they do not suck blood? 

In answer to this question, scientists say, finding female mosquitoes behind this could be a reason. Usually, female mosquitoes hover around humans to suck blood, so male mosquitoes roam around the same place to breed. Although scientists say, more research is still needed to find out the more precise reason.

    

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