can anyone please tell me why mosquitoes can't transfer AIDS? and why animals cant get AIDS?

Question

My teacher offered 5grams for this answer and no one had it!!!

Answer 1

*1) Mosquitoes Digest the Virus that Causes AIDS
When a mosquito transmits a disease agent from one person to another, the infectious agent must remain alive inside the mosquito until transfer is completed. If the mosquito digests the parasite, the transmission cycle is terminated and the parasite cannot be passed on to the next host. Successful mosquito-borne parasites have a number of interesting ways to avoid being treated as food. Some are refractory to the digestive enzymes inside the mosquito's stomach; most bore their way out of the stomach as quickly as possible to avoid the powerful digestive enzymes that would quickly eliminate their existence. Malaria parasites survive inside mosquitoes for 9-12 days and actually go through a series of necessary life stages during that period. Encephalitis virus particles survive for 10-25 days inside a mosquito and replicate enormously during the incubation period. Studies with HIV clearly show that the virus responsible for the AIDS infection is regarded as food to the mosquito and is digested along with the blood meal. As a result, mosquitoes that ingest HIV-infected blood digest that blood within 1-2 days and completely destroy any virus particles that could potentially produce a new infection. Since the virus does not survive to reproduce and invade the salivary glands, the mechanism that most mosquito-borne parasites use to get from one host to the next is not possible with HIV.

*2) Mosquitoes Do Not Ingest Enough HIV Particles to Transmit
AIDS by Contamination
Insect-borne disease agents that have the ability to be transferred from one individual to the next via contaminated mouthparts must circulate at very high levels in the bloodstream of their host. Transfer by mouthpart contamination requires sufficient infectious particles to initiate a new infection. The exact number of infectious particles varies from one disease to the next. HIV circulates at very low levels in the blood--well below the levels of any of the known mosquito-borne diseases. Infected individuals rarely circulate more that 10 units of HIV, and 70 to 80% of HIV-infected persons have undetectable levels of virus particles in their blood. Calculations with mosquitoes and HIV show that a mosquito that is interrupted while feeding on an HIV carrier circulating 1000 units of HIV has a 1:10 million probability of injecting a single unit of HIV to an AIDS-free recipient. In laymen's terms, an AIDS-free individual would have to be bitten by 10 million mosquitoes that had begun feeding on an AIDS carrier to receive a single unit of HIV from contaminated mosquito mouthparts. Using the same calculations, crushing a fully engorged mosquito containing AIDS positive blood would still not begin to approach the levels needed to initiate infection. In short, mechanical transmission of AIDS by HIV-contaminated mosquitoes appears to be well beyond the limits of probability. Therefore, none of the theoretical mechanisms cited earlier appear to be possible for mosquito transmission of HIV.

*3) Mosquitoes Are Not Flying Hypodermic Needles
Many people think of mosquitoes as tiny, flying hypodermic syringes, and if hypodermic needles can successfully transmit HIV from one individual to another then mosquitoes ought to be able to do the same. We have already seen that HIV-infected individuals do not circulate enough virus particles to result in infection by contamination. However, even if HIV-positive individuals did circulate high levels of virus, mosquitoes could not transmit the virus by the methods that are employed in used syringes. Most people have heard that mosquitoes regurgitate saliva before they feed, but are unaware that the food canal and salivary canal are separate passageways in the mosquito. The mosquito's feeding apparatus is an extremely complicated structure that is totally unlike the crude single-bore syringe. Unlike a syringe, the mosquito delivers salivary fluid through one passage and draws blood up another. As a result, the food canal is not flushed out like a used needle, and blood flow is always unidirectional. The mechanics involved in mosquito feeding are totally unlike the mechanisms employed by the drug user's needles. In short, mosquitoes are not flying hypodermic needles and a mosquito that disgorges saliva into your body is not flushing out the remnants of its last blood meal.
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The research journal Science has this to say about AIDS experimentation on animals:

* "No animal models faithfully reproduce HIV-1 infection and disease in humans, and the studies of experimental vaccines in animal models… have yielded disparate results.”1

* "There is a big leap from monkeys to humans: for starters, HIV-1, the main AIDS virus that infects humans, differs significantly from SIV…”2

* "A molecular clone of the prototype SAIDS virus has no notable similarity in either genetic organization or sequence to the human AIDS retrovirus.”3

Animal data suggested that HIV progressed slowly, with long latency periods. Applying this to human patients, doctors saw no need for aggressive therapy in its early stages. Unfortunately, this was not applicable to humans, as studies of AIDS patients revealed--in humans, the disease progresses quickly with short latency periods. The result: patients were deprived of suitable treatment and died.
Resources used on these animal experiments would have been better spent on legitimate, human-based research methods, or proven-effective prevention programs at home and abroad.

Answer 2

I'm not sure about the mosquitoes.
Animals don't get the same AIDS as humans, but many species do have similiar diseases. Cats and Monkeys can get viruses which breakdown their immune system just like HIV does to humans. In order for a virus to be pathogenic (disease-causing) to a certain species, it must be genetically capable of infecting the host. We see bird flu, for example. It is not threatening to humans at this time. But scientists are worried about a mutation it may undergo which will make it dangerous to humans.

Answer 3

aids cannot survive in mosquitos bodys and yah. i know that it was started and spread to humans becuase in africa people used to drink monkey blood so there was probably some cut in the persons mouth and the infected blood went into the system. All in all aids needs a certain think to survive and that certain thing doesn't survive in a mosquitoes body!

Answer 4

na na i can tell you straight up, first of all, when a mosquito bites you, it only injects saliva, and sucks up blood into a seperate part of the body, plus if the mosquito was infected with hiv, hiv isnt transferred by saliva, second, if a mosquito with hiv infected blood was biting you, and u squashed it on the place where it bit you, there arnt enough hiv particles in that amount of blood to infect you, thats why hiv is difficult to detect in blood cos there arnt many particles. apparently for you to get infected this way, u need to get bitten by 10000 hiv infected mosquitos. also, and this is the main reason, if a mosquito bit someone which was hiv positive, the virus can only survive in a mosquito for maybe a few hours or so, so if a mosquito bit someone with hiv, it wouldnt bite you cos it wouldve had its meal, so that gives it time to digest the hiv particles and kill the virus. done. dont ask me where i learned this

Answer 5

Mosquitoes can't transfer AIDS simply because the HIV virus cannot live inside their body and they have a very short life span of about a few days. =D

Answer 6

My understanding is that mosquitoes can only transfer diseases caused by parasites. AIDS (autoimmune deficiency syndrome) is caused by HIV, which is a virus, not a parasite. HIV is a human virus. As viruses can mutate, it would be possible for it to mutate into a form that could infect other animals, but it is not likely.

Answer 7

Because the AIDS virus cannot live outside the body for a certain period of time therefore, mosquitoes cannot transmit the virus

Answer 8

who says you cant get aids from mosquitoes and animal have a different strain of aids. Some think aids came from beastlyality in Africa

Answer 9

Animals can get aids, monkeys have been infected with HIV/AIDS for medical testing. Actually, recently I read an article that monkeys are the original source of aids. I forget what species, but trust me...it's possible.

Answer 10

mosquitoes don't transmit AIDS because they don't inject one person with blood from another bite, so no blood is transferred from bite to bite, and mosquitoes aren't themselves a carrier for the disease.

AIDS is in general specific to humans (although it has been theorized to have started as a monkey based virus) because it has adapted for the human immune system, which is sufficiently different from most animals.

Answer 11

When Will You People Learn.
A.I.D.S. is an acronym and not a disease or virus.
Aquired. Immune. Deficiency. Syndrome.
You Need To Be Asking About
H.I.V which is the actual virus.
Human. Immunodeficiency. Virus.

and certain animals have thier own strains of the virus.i.e: cats and monkeys.