Why do mosquitoes bite some people more than others?

Often people wonder why when traveling in a group some end up with their arms, legs or any part of their body covered in bite marks and others it looks like everything is fine .

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

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 breed more easily in warm, humid environments, so summer is a good time to grow them.

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

The same goes for lactic acid, which “is a substance produced by muscle tissue and red blood cells that carries 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 MedlinePlus.

Cases of Zika in the country have occurred in Bolívar, Antioquia, San Andrés, Sucre and Norte de Santander.  Photo: Private Archives
Cases of Zika in the country have occurred in Bolívar, Antioquia, San Andrés, Sucre and Norte de Santander. Photo: Private Archives – Photo: private archives

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

Sin embargo, podría decirse que a quienes pican poco, produced algún type de “repelente natural”, debido a las moléculas que produzcan en el organismo de cada persona, esto según un estudio realized con gemelos, por la Escuela de Higiene y Medicina Tropical from London.

On the other hand, a study published by the Journal of Medical Entomology revealed that insects bite people with blood type O twice as often as those with blood type Awhile those of type B, are in the middle, as reported by Telecinco.

Additionally, in a 2011 study published by the journal Plos One, the researchers found that “men with a greater 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 proteins present in the blood to produce their eggs, while they feed, “the females inject themselves with anticoagulants containing saliva which prevent the 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 for the state of Pennsylvania, USA.

“Environmental conditions, such as heavy rainfall and warm temperatures, favor mosquito development, increase the level of infection in the reservoir host population and, therefore, increase the possibility of humans contracting the disease,” adds the PES.

Also, it should be noted that one of the spaces conducive to the reproduction and proliferation of mosquitoes or mosquitoes, are the places where there is still water, so it is recommended to constantly change the sites that s lend themselves to it and avoid it.

Leave a Comment