AIDS Is it true that mosquito bites are not included in viral transmission? Will mosquito bites of AIDS never happen? In this issue, we will uncover the mystery for you.
1. After the mosquitoes suck blood, the pathogens in the blood cannot keep "active" in the mosquito body, and there is no possibility of re infection
Pathogens must remain active in the mosquito carrying process to be transmitted between hosts. If mosquitoes digest the pathogen, the virus will not be transmitted to the next host. Mosquito viruses usually have many ways to avoid decomposition. Some viruses are immune to mosquito digestive enzymes. Most viruses quickly penetrate the mosquito's stomach to avoid being broken down by powerful digestive enzymes. malaria The pathogen can survive in the mosquito stomach for 9 to 12 days, and complete the necessary transformation in the process. encephalitis The pathogen has an incubation period of 10 to 25 days inside the mosquito, during which it divides and multiplies in large numbers. Research has proved that HIV and blood are digested in mosquitoes. Therefore, mosquitoes will digest all pathogens within one or two days after ingesting HIV infected blood, and there will be no possibility of re infection. Since the virus can no longer reproduce and enter the mosquito's digestive gland, HIV cannot be transmitted from a single host. The theory that most mosquito parasites can transmit HIV in this way cannot prove that mosquitoes can transmit HIV.
2. The HIV contained in each blood sucking of mosquitoes is not enough to transmit
The content of pathogens in the blood is high enough to make the virus spread among different hosts, that is, enough pathogens can make the infection go on. The minimum number of pathogens required for different infectious diseases varies. The level of HIV in the blood is lower than that of all known mosquito infectious diseases. It is rare to find infected people with 10 units of virus in their blood, and 70% to 80% of infected people have very little virus in their blood.
The data shows that after absorbing 1000 units of HIV, the probability that mosquitoes can transmit one unit of HIV to the next host is one in 10 million. It is obvious that an uninfected person needs to be bitten ten million times by mosquitoes who have ingested the blood of an infected person before they can infect a unit of HIV, and one person can drink enough HIV positive STD The protozoan mosquitoes are still not enough to transmit AIDS. In short, the possibility of transmitting AIDS in this way is basically non-existent.
3. Mosquitoes are not flying syringes
Mosquitoes are generally considered as small flying syringes. If syringes can transmit HIV, mosquitoes should also be able to do so. In fact, HIV infected people do not carry enough pathogens. Even if AIDS patients carry enough high levels of pathogens, mosquitoes cannot transmit AIDS like syringes. Many people know that mosquitoes ruminate before biting, but few people know that the mosquito's esophagus and saliva are separated. The structure of mosquito feeding organs is complex, which is quite different from the simple structure of syringes. Mosquitoes secrete saliva and ingest blood are two different channels. The difference from the syringe structure is that the blood vessels of mosquitoes are usually one-way channels. Therefore, the mosquito feeding process is quite different from the syringe injection process. In short, mosquitoes are not flying syringes, and the saliva they secrete before biting is not the leftovers from the last blood meal.
To sum up, none of the above three theories can prove that mosquitoes can transmit AIDS. So friends who suspect that blood sucking insects such as mosquitoes will carry HIV blood can rest assured that mosquito bites are absolutely impossible to lead to HIV infection.
