Mystery solved: Why mosquitoes bite certain people more than others

Mystery solved: Why mosquitoes bite certain people more than others

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Many times people wonder why when traveling in a group there are some who end up with their arms, legs or any part of the body covered in welts due to bites and others it seems that nothing is wrong.

It must be said that each organism is different, so each one produces certain substances more than others, which can be attractive to these insects, which are, generally, the transmitters of diseases such as malaria, yellow fever, Zika, the chikungunya or dengue.

It must be said that the Human beings naturally produce carbon dioxide when they breathe and when the body itself emits gases, These make a person extremely attractive to mosquitoes, which also reproduce more easily in warm and humid environments, so summer is a favorable time for their cultivation.

In this regard, Joop van Loon, an entomologist at Wageningen University in the Netherlands, explained that “mosquitoes begin to orient themselves towards these impulses of carbon dioxide and continue to fly against the wind while they perceive concentrations higher than those contained in the air. normal environment”, as recorded by Very Interesting.

The same happens with lactic acid, which “is a substance produced by muscle tissue and red blood cells that transports oxygen from the lungs to other parts of the body. Normally, the level of lactic acid in the blood is low. Lactic acid levels increase when oxygen levels decrease“, according to MedlinePlus.

Zika cases in the country have occurred in Bolívar, Antioquia, San Andrés, Sucre and Norte de Santander. Photo: Private Archive – Photo: private archive

Which means that the victims of the mosquitoes are, for the most part, adults, people of greater height and pregnant women, since they are the ones who have a greater production of said substances in their body. Nevertheless, It is important to mention that “in the world there are more than 3,500 species of mosquito and, of these, only about 200 feed on human blood”according to Telecinco.

However, it could be said that those who bite little, produce some type of “natural repellent”, due to the molecules that are produced in the body of each person, according to a study carried out with twins, by the School of Hygiene and Tropical Medicine. From london.

On the other hand, a study published by the Journal of Medical Entomology revealed that insects bite people whose blood type is O twice more than those with blood type A, while those with type B are in half, as reported by Telecinco.

Furthermore, in a 2011 study published by the journal Pls One, the researchers found that “men with a higher diversity of skin microbes tend to have fewer mosquito bites than men with fewer skin microbes.” While “men with less diverse microbes tended to have bacteria on their bodies such as: Leptotrichia, Delftia, Actinobacteria Gp3, and Staphylococcus”.

Female mosquitoes bite, due to their need for protein found in the blood to produce their eggs, while they feed, “females inject anticoagulants containing saliva that prevent blood from clotting.” Thus, “they can acquire pathogenic organisms from an infected host and then transmit those organisms to previously uninfected hosts,” according to the Penn State Extensionwebsite of the state of Pennsylvania, United States.

“Environmental conditions, such as high rainfall and warm temperatures, favor the development of mosquitoes, increase the level of infection in the host population of the reservoir and, therefore, increase the possibility of humans acquiring the disease,” he adds. the PSE.

Also, it is worth noting that one of the favorable spaces for the breeding and proliferation of mosquitoes or mosquitoes, are the places where there is still water, so it is recommended to constantly change the sites that lend themselves to this and avoid it.


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