Why Do Mosquitoes Transmit Diseases Like Malaria But Not Hiv That Can Lead To Aids
In order for a virus to be transmitted by mosquitoes it has to be able to escape the mosquito’s gut, reach the salivary glands, and replicate enough copies of itself to infect another host the next time the mosquito feeds. Viruses like West Nile or dengue, and other mosquito-borne pathogens like Plasmodium have evolved to do precisely that. The HIV virus is adapted to humans and other primates, not to mosquitoes and is simply digested along with the blood meal without being able to escape the mosquito’s gut.
Even if it could do so, HIV is adapted to infecting human/primateT-cells and requires them in order to replicate. It is not adapted to infecting mosquito salivary gland cells, so it would be unable to replicate to an infectious level in a mosquito, or to be transmitted to another host.
Can You Get Hiv From A Mosquito Bite
From the very start of the HIV epidemic, there have been concerns about the transmission of HIV through biting and bloodsucking insects, such as mosquitoes. It was a natural concern given that many diseases, such as malaria and Zika fever, are readily transmitted through an insect bite.
However, this is not the case with HIV. Epidemiological studies conducted by the Centers for Disease Control and Prevention in Atlanta have shown no evidence of HIV transmission through mosquitoes or any other insects, even in countries with extremely high rates of HIV and uncontrolled mosquito infestations. The lack of such outbreaks supports the conclusion that HIV cannot be transmitted by the insects.
I Don’t Need To Worry About Getting Hiv Drugs Will Keep Me Well
Antiretroviral drugs improve the lives of many people who have HIV and help them live longer. But many of these drugs are expensive and have serious side effects. There’s no cure for HIV. And drug-resistant strains of HIV can make treatment harder.
Prevention is cheaper and easier than managing a lifelong condition and the problems it brings.
Read Also: How I Found Out I Had Hiv
Why Malaria And Dengue But Not Hiv And Aids
Fun fact Mosquitoes can only transmit certain kinds of diseases selectively. But why exactly?
To answer this question, we have to first understand how a mosquito goes about ingesting blood. In essence, a female mosquito seeks for a tasty beverage, and uses the protein and iron in this beverage to nourish their eggs. After feeding some blood, she injects saliva into the victims body to prevent the blood from clotting. The saliva contains enzymes and proteins that results in an allergic reaction in most human beings, creating an itchy and red bump.
> > Related: Best Mosquito Zapper & Electric Swatter
If the mosquito happens to bite on someone infected with malaria or dengue, she ingests the Plasmodium parasite, which enters her cells and starts replicating rapidly. This disease agent then moves to her salivary glands, ready for an attack to another unsuspecting victim, causing the victim to be infected with Malaria or Dengue.
Mosquitoes Are Not Syringes
The misconception that the needle of a mosquito works the same way as a hypodermic syringe is incorrect. While many people are aware that mosquitoes transfer saliva before feeding, they are unaware that the salivary canal is separate than the food canal and its a two-way road.
Behind the needle-like apparatus is a complex structure that is different than an uncomplicated syringe. The mosquito has two tubes one for saliva and the other for drawing blood. The two are not interchangeable and the remnants of the last blood meal are not flushed out as done with a used needle.
Read Also: How Can Hiv Be Contracted
Can A Mosquito Bite Give You Hiv The Truth
A person can become infected with HIV, once he/she comes in contact with infected blood. Female mosquitoes are known for sucking the bloods of human beings using their antenna, so what happens when they suck the blood of a person infected with HIV and later suck the blood of a non-HIV patient? Does it spread the HIV virus? This article helps to explain what really happens.
Mosquitoes are vectors for a number of well-known viruses, including malaria and dengue illness. Mosquitoes, in particular, kill more people each year than any other animal due to mosquito-borne diseases. Fortunately for humans, mosquitoes do not carry or spread the HIV virus. Mosquitoes are unable to spread HIV for a variety of reasons.
A mosquito’s “snout,” which resembles a needle, is actually made up of six mouthparts. Four of these punctures the skin of the person or animal being bitten by the mosquito. Two tubes make up the remaining two parts. One of the reasons mosquitoes are unable to transmit HIV is because of this two-tube arrangement. When a mosquito bites, only saliva is injected into people, hence HIV positive blood that a mosquito may have previously consumed is never spread to other humans.
Content created and supplied by: HopeAlive1
In What Conditions Can The Hiv Virus Be Transmitted
For the HIV virus to be transmitted, there is a specific set of conditions that have to be fulfilled. If any of these conditions are not entirely satisfied, the likelihood of transmission is negligible.
First, its vital that there is a bodily fluid such as blood, breast milk or semen in which HIV can thrive. The virus cannot live in ones saliva, sweat, feces or urine.
Secondly, it is important that there exists a route through which the virus can enter ones body. This route can be through direct blood-to-blood transmission, or through mucosal tissues that are vulnerable.
Thirdly, there has to be a considerable amount of blood transmitted for a positive infection to occur. This is the reason why a person with a low viral load has lower risks of infecting others. The viral load of an HIV positive person expresses the concentration of the virus in ones blood.
A person that has a low viral load is not free of HIV. This is only an indication that the virus population has dropped below standard testing levels. Only 5 percent of the HIV virus can be found in ones blood.
Recommended Reading: Can Hiv Ever Go Away
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.
Can Mosquitoes Carry The Coronavirus Here’s What Experts Say
Now that mosquito season is here and lockdowns are lifting, people are concerned.
Mosquito season is upon us, and considering that these bloodsuckers are known to transmit diseases, people are concerned: Do mosquitoes carry the coronavirus? And if so, can they transmit it to humans and infect a person with COVID-19?
Short answer: it’s unlikely. Official guidance from the World Health Organization says theres no information or evidence to suggest that the new coronavirus could be transmitted through mosquito bites.
For starters, the coronavirus is a respiratory virus, and the main mode of transmission are viral droplets released into the air when an infected person coughs or sneezes. For a mosquito to become infected with a virus, it must be present in the blood the mosquito feeds on.
SARS-CoV2 is a respiratory virus that is almost exclusively contained within the lungs and respiratory tract of infected people, and rarely gets into the blood,Emily Gallichotte, PhD, a postdoctoral researcher in the department of microbiology, immunology, and pathology at Colorado State University, tells Health.
Plus, for a virus to pass to a person through a mosquito or other kind of insect bitesuch as a tick bitethe virus must be able to replicate inside the mosquito or tick. Neither the new coronavirus nor any other type of coronavirus has been shown to do that.
Recommended Reading: What Is The Average Life Expectancy Of Hiv Patients
List Of Diseases Caused By Mosquitoes
Heres a List of Diseases Caused by Mosquitoes. Mosquitoes are arguably the number one nuisance in summer and cause of immense human suffering in the world. Their ability to endure and reproduce in any weather condition makes them challenging to control.
The buzzing alone can drive one crazy, not forgetting the painful bites. What makes the mosquitoes more dangerous is their ability to spread diseases and parasites that affect humans and animals.
Mosquitoes feed on blood. Therefore, they swallow parasites and viruses from their hosts and can quickly transfer them into their next victims through their saliva.
Infections spread through mosquitoes are known as mosquito-borne diseases. These blood-sucking bugs cause almost 700 million infections yearly, resulting in over one million deaths annually.
Here is a list of diseases caused by mosquitoes. They include Malaria, Dengue fever, Yellow fever, Zika virus, Chikungunya, Elephantiasis, Japanese encephalitis.
Why Some Viruses And Not Others
Its easy to think of mosquitoes as tiny flying dirty syringes transferring droplets of infected blood from person to person. The reality is far more complex.
When a mosquito bites and sucks up some blood that contains a virus, the virus quickly ends up in the gut of the insect.
From there, the virus needs to infect the cells lining the gut and escape to infect the rest of the body of the mosquito, spreading to the legs, wings, and head.
The virus then has to infect the salivary glands before being passed on by the mosquito when it next bites.
This process can take a few days to over a week.
But time isnt the only barrier. The virus also has to negotiate getting out of the gut, getting through the body, and then into the saliva. Each step in the process can be an impenetrable barrier for the virus.
This may be straightforward for viruses that have adapted to this process but for others, the virus will perish in the gut or be excreted.
You May Like: How Many Pills Do Hiv Patients Take Daily
Q: Can Mosquitoes Transmit Hepatitis
Mosquitoes spread infections through their saliva. Fortunately, hepatitis is transmitted through blood.
Prevention Is the Best Approach
Mosquito bites are more than just itchy bumps. They cause fatal diseases leading to high loss of lives annually. Use repellants to protect yourself and family from the list of diseases caused by mosquitoes.
With proper maintenance of your surroundings, the pests will stay away. Furthermore, you can always call a professional exterminator to help with the infestation.
Why Cant Mosquitoes Transmit Hiv And Aids
There are various reasons as to why mosquitoes are not transmitters of such diseases.
> > Also read: 4 Best Mosquito Sprays
Firstly, mosquitoes do not contain human T cells which are required for the virus to manifest and then replicate to pass on to another human being. Hence, when a mosquito feeds on the blood of someone transmitted with HIV or AIDS, the HIV enters the insects gut, and is then broken down in their digestive system.
Secondly, the blood ingested by mosquitoes is way too little to contain HIV. With such a small amount of blood being consumed, there is little probability of the mosquito actually ingesting any HIV. .
Thirdly, according to the United States National Centre for Biotechnology information , the HIV virus is less likely to be transmitted due to the low gradient and titer concentration of virus being ingested by the mosquito. This results in the virus being impotent and thus ineffective in transmission.
Lastly, mosquitoes require ample time to digest the blood they have ingested. Due to the short survival of the HIV virus in the mosquito , the mosquito might have insufficient time to find another target and infect it within such a tight interval.
> > Related: Effective Mosquito Repellents
Read Also: Can You Get Hiv Using Protection
Mosquitoes Inject Saliva Not Blood
Because hepatitis B and hepatitis C are spread by contact with infected blood, it’s very tempting to think of mosquitoes as flying hypodermic needles. However, the “needle” that mosquitoes feed with, called the proboscis, is actually a complex structure that has separate channels. When a mosquito bites, it injects saliva through one channel. The saliva functions as a lubricant to help the mosquito feed easier. The blood it sucks as a meal flows in a completely separate channel and only in one direction, toward the mosquito. So, it’s biologically unlikely for infected blood to be spread to another person.
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.
You May Like: Does Hiv Make You Lose Weight
Mosquitoes Do Not Pass Blood From One Host To Another
Another common reason people worry about the potential for mosquitoes to transmit HIV comes from a mental comparison between the risk of sharing needles and the needle-like mechanism that mosquitoes use to bite and draw blood. In reality, mosquitoes have a system of six different mouthparts, not one needle-like mechanism. Some of these mouthparts are used to pierce the skin of the person or animal. Two of the mouthparts operate as tubes, with one tube being used to draw blood out of the host and the other being used to inject the mosquitos saliva into the host. The mosquitos saliva contains anticoagulants which allows the mosquito to feed more efficiently. No blood that a mosquito has previously ingested makes its way into a host, meaning that a mosquito that draws blood from a person with HIV can not expose another person to that blood. By comparison to the HIV virus, lets learn about malaria. After incubating in the mosquito, the malaria parasite can migrate to the mosquitos salivary glands. When a mosquito carrying malaria bites a host, the malaria parasite is transmitted to the host through the mosquitos saliva.
Can I Get Aids From A Mosquito Bite
One of the most prevalent myths about HIV transmission is that mosquitoes or other bloodsucking insects can infect you. There is no scientific evidence to support this claim. To see why mosquitos don’t aid in the transmission of HIV, we can look at the insect’s biting behavior.
When a mosquito bites someone, it does not inject its own blood or the blood of an animal or person it has bitten into the next person it bites. The mosquito does inject saliva, which acts as a lubricant so that it can feed more effectively. Yellow fever and malaria can be transmitted through the saliva, but HIV does not reproduce in insects, so the virus doesn’t survive in the mosquito long enough to be transmitted in the saliva.
Additionally, mosquitoes don’t normally travel from one person to another after ingesting blood. The insects need time to digest the blood meal before moving on.
Here are some interesting links:
How Can I Protect Myself From Mosquitoes
Although they cannot transmit the HIV virus, mosquitoes are still a nuisance and they have been linked to the transmission of other diseases such as malaria or the dengue fever. Because of this, it is crucial that you protect yourself from these insects in an appropriate manner.
If you are a fan of natural products, you can use citronella, peppermint and lavender oils by rubbing them into your skin. Some other plants that mosquitoes are not fans of are marigolds, basil, catnip, and lemons. Moreover, you can keep yourself safe by eating garlic, as some argue that it can also do the trick.
Some also recommend that one takes B1 supplements regularly. It seems like this vitamin can make us give off a certain smell that is imperceptible to us, but which can effectively repel mosquitoes and other similar insects.
If you are the type of person that prefers a more severe approach, and you are not against the use of chemicals, you can purchase a spray that was created for the task. There are two types of insect repellents that you can opt for, those that include DEET and those products that do not.
DEET is an active ingredient that comes in the form of a yellow-colored oil. It can be applied directly to the skin and it is generally recommended by the specialists. Although this choice is not entirely safe there have been people who have had allergic reactions to it the DEET-based sprays are considered the best repellents invented.
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.