The bigger the mosquito bag, the more toxic the mosquito is?
The truth: It mainly depends on the type of mosquito and personal sensitivity.
In addition to high temperatures in summer, mosquitoes are also annoying. Some people may get a small red envelope after being bitten by mosquitoes, while some people may become miserable after being bitten by mosquitoes - turning into " wind ears ", "dachshund mouth" and "pig's trotters" News about "hands" have appeared in newspapers frequently.
was also bitten by a mosquito. Why are the "models" of the packages so different? It is said on the Internet that "the bigger the mosquito bag, the more poisonous the mosquito is." Many people believe this statement, so what is the truth?
"After being bitten by a mosquito, symptoms such as wheals, papules, and itching will appear on the skin. What we often call mosquito bites is a local allergic reaction on the skin." Liu Ruiling, deputy chief physician of the Allergy Department of Tianjin Medical University General Hospital, told Science and Technology Daily reporter said in an interview.
When a mosquito bites a person, it will pierce the piercing-sucking mouthparts into the human skin and cause damage. It will "poison" the human body while sucking blood, that is, it will secrete saliva to prevent blood coagulation and block its mouthparts. The saliva can also have a paralyzing effect, making it difficult to detect. After sensing the invasion of mosquito "saliva", the human body's immune system will be activated. The secreted histamine and cytokine will dilate blood vessels, increase vascular permeability, and cause local tissue edema, thereby causing skin itching and local inflammation. reaction.
"The degree of inflammatory reaction of each person after being bitten by a mosquito is mainly related to the type of mosquito and personal sensitivity." Liu Ruiling explained that when a person with allergies is bitten by a mosquito, his body will secrete a large amount of histamine and cytokines, and then Cause allergic reactions. In mild cases, wheals, papules, angioedema may occur, and in severe cases, systemic reactions may occur.
In addition, the size of the mosquito bag is also related to the site of the bite. Loose connective tissue areas such as eyelids, lips, backs of hands, children's foreskin, etc. are prone to edema after being bitten, and mosquito bites will also appear larger.
After being bitten by a mosquito, do not scratch it desperately. Scratching will exert mechanical pressure on the local skin and speed up the blood flow. These will aggravate the inflammatory reaction and cause the mosquito bite to become larger.
The hot summer days
In addition to mosquitoes
flies are also a "big worry" for many people
Increased rainfall
The temperature has risen significantly
These have increased the population density of mosquitoes and flies
Provided
excellent climate and environmental conditions
It has become the peak of mosquito and fly breeding How to prevent the breeding of mosquitoes and flies during the period when
is frequently active?
please do this work together!
Source: Xinhua News Agency client, People's Daily Online + client
Editor: Shang Fan
Editor in charge: Fu Zhaosa
