Hiv: How Its Not Transmitted
The following are nine ways the virus is not spread:
Kissing and touching. Social kissing and hugging pose no risk of transmission, Sha says. Also, being sexual with someone without exchanging infected body fluids does not spread the virus. The only time deep kissing is a risk is when the person infected with HIV has open sores or oral bleeding, Sha notes.
Sharing a living space. Any casual contact with someone who has HIV, including sharing a bathroom, is safe. However, Sha tells patients not to share razor blades or toothbrushes. If someone who is infected nicks himself while shaving or has bleeding gums, it could increase risk of transmission.
Sharing food or utensils. The virus cannot survive on surfaces, so sharing utensils and other household items will not spread HIV. You can even share a meal with someone who is infected without worry. Transmission has been associated with mothers pre-chewing food for their babies, when infected blood from the mouth mixes with the food. Known as pre-mastication, it is a common practice in Africa, but not typically done in the United States, Sha says.
Saliva, sweat, or tears. An infected persons saliva, sweat, and tears do not put you at risk.
Water fountains. Sipping from a water fountain after someone who has HIV used it is considered casual contact and will not lead to transmission.
Mosquitoes and other insects. The virus is not viable in insects or ticks, Sha says.
Hiv Doesnt Affect Mosquitoes So They Cant Transmit It To Humans
Mosquitoes lack the receptor HIV uses to recognize immune cells. This means that mosquitoes cant get an HIV infection. Instead, the virus just gets broken down and digested in the mosquitos stomach.
Because they cant get an HIV infection, mosquitoes cant transmit HIV to humans.
Do Mosquitoes Transfer Blood
Although mosquitoes suck blood, they do not inject or circulate it back into you. This is due to their unique proboscis. Made up of two tubes, one tube sends saliva into the host while the other sucks up blood. This two-tube system is why mosquitoes cannot transmit HIV, which is transmitted through infected blood. Any HIV-positive blood ingested by a mosquito is thus impossible to transmit to another host.
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Is There A Risk Of Hiv Transmission When Getting A Tattoo Or A Body Piercing Or While Visiting The Barber Or Hairdresser
Persons who carry out body-piercing and tattoos should follow procedures called “Universal Precautions“, which are designed to protect both workers and their customers from the transmission of blood borne infections such as HIV and Hepatitis B. The guidelines state that any instrument designed to penetrate the skin such as tattoo or acupuncture needles should be either used only once and discarded , or should be thoroughly cleaned and sterilized after each use.
When visiting the barber there is no risk of infection unless the skin is cut and if there is a transfer of infected blood. If the instruments are contaminated with infected blood and are not sterilized between clients there is a risk of HIV transmission.
How Many Kinds Of Mosquitoes Are There
About 3,000 species of mosquitoes have been described on a world-wide basis with approximately 150 known to occur in North America. The term “Mosquito State” is appropriate for
New Jersey because 63 species of mosquitoes have been found within its boundaries, to date. Only 15 of those species have been documented in Mercer County so far. This number should rise drastically, as the surveillance and identification efforts of the county improve for the upcoming season.
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Hiv Cannot Survive Inside Mosquitoes
Another reason mosquitoes cannot transmit HIV is that the virus cannot replicate in their bodies. If a mosquito draws blood that contains the HIV virus, the virus is broken down inside the mosquito. The HIV virus requires human T cells to replicate and mosquitoes do not have T cells. This also applies to other insects that draw blood, including fleas, bed bugs and lice. HIV cannot replicate inside these insects so the virus dies.
Contaminated Blood Transfusions And Organ/tissue Transplants
- receiving blood transfusions, blood products, or organ/tissue transplants that are contaminated with HIV. This risk is extremely small because most countries test blood products for HIV first.
If adequate safety practices are not in place, healthcare workers can also be at risk of HIV from cuts made by a needle or sharp object with infected blood on it. However, the risk of occupational exposure, is very low in most countries.
If you think you have been exposed to HIV, the only way to find out if you have HIV is to have an HIV test.
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Ways Hiv Cannot Be Spread
HIV is not spread by:
- Air or water
- Mosquitoes, ticks or other insects
- Saliva, tears, or sweat that is not mixed with the blood of a person with HIV
- Shaking hands hugging sharing toilets sharing dishes, silverware, or drinking glasses or engaging in closed-mouth or social kissing with a person with HIV
- Drinking fountains
Can Mosquitoes Transmit Hiv
by BenPublished on April 25, 2019Updated on June 15, 2020
Its well known that mosquitoes are carriers for infectious viruses, but can mosquitoes transmit HIV? In this blog, well break down this common misconception about mosquitos and HIV symptoms and answer that question.
Mosquitoes are notorious for spreading more than a few dangerous infections, most notably malaria, West Nile and Zika viruses to mention just a few. Because of the viruses they transmit, mosquitoes kill more people per year than any other insect/animal.
However, while the threat of contracting a dangerous virus from a mosquito is certainly credible HIV is not one of those viruses. Multiple studies have shown no evidence that mosquitoes can transmit HIV infection, even in countries with high rates of HIV and large unchecked mosquito populations.
Here are a few reasons why mosquitoes cannot transmit HIV from person to person.
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If A Used Needle Can Transmit Hiv Why Can’t A Mosquito
Laurence Corash, chief medical officer of Cerus Corporation, provides the following explanation:
|Image: JIM GATHANY/CDCMOSQUITOES do not provide HIV with the T cells the virus needs in order to replicate.|
The AIDS virus on used needles is infectious when injected into a human where the virus can bind to T cells and start to replicate. The human T cell is a very specific host cell for HIV. When a mosquito feeds on a person with HIV in his or her blood, the HIV enters the insect’s gut, which does not contain human T cells. The virus thus has no host cell in which to replicate and it is broken down by the mosquito’s digestive system.
The single-celled parasite that causes malaria, in contrast, can survive and multiply in the mosquito’s gut and mature into an infectious form. The resulting sporozoites then migrate to the insect’s salivary glands. Because mosquitoes inject their saliva when they bite, the parasite is passed along to the next human the insect feeds on. In this case the complex interaction between the infectious agent and the vector is required for transmission. HIV, however, deteriorates in the gut before the mosquito bites again and therefore is not transmitted to the insect’s next victim.
Why Mosquitoes Don’t Spread Hepatitis
Robert Burakoff, MD, MPH, is board-certified in gastroentrology. He is the vice chair for ambulatory services for the department of medicine at Weill Cornell Medical College in New York, where he is also a professor. He was the founding editor and co-editor in chief of Inflammatory Bowel Diseases.
It’s a beautiful day and you’re outside enjoying the fresh air. You feel a small prick on your arm and notice that a mosquito is getting a free meal. Without realizing, you kill it with a quick slap of your hand but notice a little blood on your arm where the mosquito was. Along with the nuisance of a mosquito bite, you might be worried about possible infections you can catch, including hepatitis.
It’s intuitive to think that when a mosquito bites someone who is infected with hepatitis and then bites another person, the second person could be exposed to the disease. Fortunately, viral hepatitis isn’t spread by mosquitoes. Let’s look at some reasons why.
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Why Do Mosquitoes Bite
Mosquitoes belong to a group of insects that require blood to develop fertile eggs. Males do not lay eggs, so male mosquitoes do not bite. The females are the egg producers and seek hosts for a blood meal. Female mosquitoes lay multiple batches of eggs and require a blood meal for every batch they lay. Otherwise, mosquitoes rely on sugar as their main source of energy. Both male and female mosquitoes feed on plant nectar, fruit juices and liquids that ooze from plants. The sugar is burned as fuel for flight and is replenished on a daily basis. Blood is reserved for egg production and is imbibed less frequently.
Can The Virus Be Transmitted Through Breastfeeding
Yes, HIV is present in infectious amounts in breast milk. HIV can be passed from an HIV infected mother to her baby through breastfeeding. Most HIV+ children in the Caribbean have been infected through mother-to-child transmission of HIV.
This can be prevented when an HIV infected mother does not breastfeed her baby and uses other alternate milk recommended by her doctor. More information on HIV and pregnancy can be found here.
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Saliva Sweat Tears Urine Or Feces
HIV cannot be spread by sharing drinking glasses or by casual kissing. The risk of spreading the virus through “deep” kissing in which large amounts of saliva are exchanged is extremely low. Only one unproven case has ever been reported.
No cases of HIV spread have ever been reported after a person has come in contact with the sweat, tears, urine, or feces of an HIV-infected person.
Myths About Hiv And Aids
- There are lots of myths around, but the facts of how you can get HIV, and how you can protect yourself, are very simple.
- One of the most common myths people living with HIV hear is that they can be cured. Theres no cure yet for HIV, but antiretroviral treatment works and will keep someone living with HIV healthy.
HIV can only be passed on from one person to another via the following bodily fluids:
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Why Do Mosquitoes Leave Welts When They Bite
When a female mosquito pierces the skin with her mouthparts, she injects a small amount of saliva into the wound before drawing blood. The saliva makes penetration easier and prevents the blood from clotting in the narrow channel of her food canal. The welts that appear after the mosquito leaves are not a reaction to the wound but an allergic reaction to the saliva injected to prevent clotting. In most cases, the itching sensation and swellings subside within several hours. Some people are highly sensitive and symptoms may persist for several days. Scratching the bites can result in infection if bacteria from the fingernails are introduced to the wounds.
Can You Get Hiv Through Oral Sex
The risk of HIV from oral sex is very small unless you or your partner have large open sores on the genital area or bleeding gums/sores in your mouth.
There is only a slightly increased risk if a woman being given oral sex is HIV-positive and is menstruating. However, you can always use a dental dam to eliminate these risks.
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Why Hiv Cannot Be Transmitted Through Mosquitoes
From a biological perspective, mosquito bites do not result in blood-to-blood transmission . The mosquito trunk does not act as a syringe. Instead, it is made up of two one-way canals, one of which draws blood, while the other injects saliva and anticoagulants that enable the mosquito to feed more efficiently. As such, blood itself is not injected from person to person, and that’s important for a number of reasons.
While diseases such as yellow fever and malaria are readily transmitted through the salivary secretions of certain species of mosquitoes, HIV does not have the ability to survive in insects, because they do not have the host cells the virus needs to replicate. Instead, the virus is digested within the mosquito’s gut, along with the blood cells on which the insect feeds, and destroyed quickly.
HIV may survive for a very short period of time in a mosquito stomach. Does that mean killing a mosquito carrying blood poses a risk? The answer is also no. It is virtually impossible to become infected by contact with the HIV virus after it has reached open air. Not only that, but the infinitesimal quantity of virus that a mosquito might carry would make transmission invariably impossible. In order to ensure viability, it would take around 10 million mosquitoesall simultaneously bitingto enable transmission to a single person.
Because it meets none of these conditions, HIV transmission through mosquito bites is considered impossible.
If I Get Infected Fluid From An Hiv
No, HIV is not always passed on from someone living with HIV. There are lots of reasons why this is the case. For example, if the HIV-positive person is on effective treatment it will reduce the amount of HIV in their body. If a doctor confirms that the virus has reached undetectable levels it means there is no risk of passing it on.
If youre concerned that youve been exposed to HIV you may be eligible to take post-exposure prophylaxis , which stops the virus from becoming an infection. However its not available everywhere and has to be taken within 72 hours of possible exposure to be effective.
Its really important to take a HIV test every time you think you have been at risk of HIV.
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A Mosquitos Feeding Mechanism
A mosquitos proboscis the elongated part of its mouth it uses to bite humans has two tubes.
One tube is used for sucking blood from humans. The other injects saliva into the bite. This means only saliva, not blood goes into your body when you get a mosquito bite.
HIV cant be transmitted through saliva, so it cant be transmitted through a mosquitos bite.
Can Herbal Medicine Cure Hiv
No. Some people choose to take alternative forms of medicine, such as herbal medicines, as a natural way of treating HIV. However, herbal remedies do not work.
Taking herbal medicines can be dangerous as they will not protect your immune system from infection. They may also interact poorly with antiretrovirals if you are taking them alongside treatment. The only way you can stay healthy when living with HIV is to take antiretroviral treatment as prescribed by your doctor or healthcare professional, and to attend viral load monitoring appointments to make sure your treatment is working.
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Can Mosquitoes Carry Diseases
Any insect that feeds on blood has the potential to transmit germs or pathogens from animals to humans. Mosquitoes are highly developed blood-sucking insects and are the most formidable transmitters of disease in the animal kingdom. Mosquito-borne diseases are caused by human parasites that have a stage in their life cycle that enters the blood stream. The female mosquito picks up the blood stage of the parasite when she imbibes blood to develop her eggs. The parasites generally use the mosquito to complete a portion of their own life cycle and either multiply, change in form inside the mosquito or do both. After the mosquito lays her eggs, she seeks a second blood meal and transmits the fully developed parasites to the next unwitting host.
Hiv Is Present In The Blood In Very Low Concentrations
Mosquitoes are able to spread certain diseases from person to person because these diseases are often circulating at very high levels in human blood. This means that there is a greater chance of the blood being drawn in by the mosquito carrying the virus or disease. However, the HIV virus circulates in extremely low levels in the blood and it is impossible for one mosquito to carry enough HIV-positive blood to cause a new infection.
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What Are The Chances Of Becoming Infected With Hiv If My Partner Doesn’t Come Inside Me
Whilst research suggests that high concentrations of HIV can sometimes be detected in pre cum, it is difficult to judge whether HIV is present in sufficient quantities for infection to occur. To guard against the possibility of infection with HIV or any other STI it is best to practice safer sex – sex with a condom from start to finish.
How Do You Get Or Transmit Hiv
You can only get HIV by coming into direct contact with certain body fluids from a person with HIV who has a detectable viral load. These fluids are:
- Semen and pre-seminal fluid
- Rectal fluids
- Vaginal fluids
- Breast milk
For transmission to occur, the HIV in these fluids must get into the bloodstream of an HIV-negative person through a mucous membrane open cuts or sores or by direct injection.
People with HIV who take HIV medicine daily as prescribed and get and keep an undetectable viral load have effectively no risk of sexually transmitting HIV to their HIV-negative partners.
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