In recent days, dengue fever’s “re-emergence” has once again led people to talk about “mosquito” discoloration. Everyone’s anxiety comes not only from the serious symptoms of dengue fever, but also from the ubiquity and pervasiveness of mosquitoes.
Mosquito bites spread and cause many diseases, in addition to dengue fever, malaria, Japanese encephalitis and so on. Among them, everyone is particularly ignorant of a disease. It is the same AIDS (AIDS) that people can talk about. Many people want to know whether this “color change” combination will spark.
What are the routes of AIDS?
HIV is mainly found in the blood, semen, vaginal secretions, and milk of infected people and patients. The disease needs to be transmitted through the exchange of body fluids, mainly including the following three major transmission routes.
1. Sexual behavior: Unprotected sexual behavior with AIDS carriers or AIDS patients, exchange of body fluids.
2. Mother-to-child transmission: also known as vertical infection, if the mother is infected with HIV, she is very likely (about 30% chance) to pass the placenta and breast milk directly HIV is passed on to newborn babies.
3. Transmission through blood and blood products: including artificial insemination, blood transfusion, skin transplantation and organ transplantation. At the same time, it is also a very important route of HIV transmission to take turns to share unsterilized needles with HIV-infected patients, or to repeatedly use injection tools used by HIV-infected patients.
Common contacts in our daily lives do not cause HIV transmission, such as: general physical contact, shared toilets and bathrooms, shared offices, public transport, recreational facilities, etc. .
Can mosquito bites spread AIDS?
We all know that AIDS is transmitted through the bloodstream, especially when we bite mosquitoes and syringes When the AIDS epidemic is associated with it, it does not cause doubts. Is it because the mosquito bites the AIDS person and then bites the healthy person, will the virus be injected (infected) into the healthy person like a syringe?
This issue begins with the way mosquitoes transmit diseases. There are two main ways to spread mosquitoes.
First, the mechanical approach is to spread the blood of HIV contaminated in the mouthparts into the healthy person through the long mouth (mouth) of the mosquito bite. First of all, HIV has very poor viability in vitro, is not resistant to high temperatures, and has low resistance. It is extremely difficult to survive from the human body. Secondly, from the point of view of mosquito bites, mosquitoes suck about 5,000 milliliters of blood every time they bite. This amount is very small, far from reaching the amount of blood enough to spread AIDS.
At the same time, when mosquitoes suck blood, the secretions used to help dilute the blood to dissolve the skin can quickly kill the HIV virus, and lucky enough to enter the mosquito body or remain in a “live” way. There are fewer viruses on the mosquito mouthparts. Every time a mosquito saturates, it can no longer bite and suck the blood of the next person within four days. As a result, the amount of virus that can eventually be contaminated on the mosquito mouthpiece in a living form is even rarer. Therefore, it is almost impossible for HIV to infect healthy people through mechanical means.
Second, biological pathways. This is also the main route of mosquito-borne diseases, and the spread of the famous malaria is through this route. The mouthparts of mosquitoes can be divided into two straws of different sizes to work together to complete the blood intake. The large straw is used to suck blood and is sent to the digestive system. The small straw applies the secreted anticoagulant and saliva to the surface of the host’s wound. The spread of malaria is transmitted to the mosquitoes through the inhalation of the blood of malaria patients through large straws. The male and female gametes of malaria develop in the mosquitoes. The developing gametes are passed through the digestive tract membrane and vascular membrane, into the salivary glands, and then secreted by small straws. Go out and get healthy when you bite.
After mosquitoes ingest high blood levels of AIDS patients, HIV can survive in the stomach of mosquitoes for several days. But despite this, these surviving HIV viruses cannot enter the salivary glands through the digestive tract membrane and vascular membrane between the large and small straws. Therefore, this approach will not work.
Moreover, there is no epidemiological and statistical evidence in science that AIDS can spread through insects. For the above reasons, the possibility of mosquito bites spreading AIDS is almost zero.
However, it is important to remind everyone that although mosquito bites cannot spread AIDS, they can still spread many other diseases, so pay attention to indoor and outdoor environments. Hygiene, it is necessary to do a good job of mosquito and mosquito killing.
(This article is from the Internet)
Can mosquito bites spread AIDS? ——Digestive disease public welfare science 1488 posts
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