According to the Centers for Disease Control and Prevention (CDC), roughly
In addition to not getting the treatment they need, they can unknowingly transmit the virus to others. In fact, almost 40 percent of new HIV cases are transmitted by people who are undiagnosed.
The CDC’s
Despite these recommendations, many Americans have never been tested for HIV.
Anyone who hasn’t been tested for HIV should consider asking their healthcare professional for a test. They can also seek free and anonymous HIV testing at a nearby clinic.
Visit the CDC’sGetTestedwebsite to find a local testing site.
The CDC advises that routine HIV testing should be provided in all healthcare settings, especially if testing for othersexually transmitted infections (STIs)at the same time.
People engaging in behaviors that put them at anincreased riskfor contracting HIV should be tested at least once a year.
Known risk factors include:
- having multiple sexual partners
- engaging in sex without a condom or barrier method and withoutpre-exposure prophylaxis (PrEP)
- having partners with an HIV diagnosis
- injecting drugs
HIV testing is also recommended:
- before a person begins a new sexual relationship
- if a person learns that they’re pregnant
- if a person has symptoms of another sexually transmitted infection (STI)
An HIV infection is now considered a manageable health condition, especially if treatment is sought early.
If a person contracts HIV, early detection and treatment can help:
- improve their frame of mind
- lower their risk of disease progression
- prevent the development of stage 3 HIV, orAIDS
It can also help reduce their risk of transmitting the virus to other people.
The life expectancy of people with an HIV diagnosis who start treatment earlyis the same as those without the virus. People who know that they’ve been exposed to HIV should seek care as soon as possible.
In some cases, if they’re treated within 72 hours, their healthcare professional may prescribepost-exposure prophylaxis (PEP). These emergency medications may help reduce their chances of contracting HIV after they’ve been exposed to it.
许多不同的测试可以用来检查for HIV. These tests can be performed on blood samples or saliva samples. Blood samples can be obtained via an in-office finger prick or a blood draw in a laboratory.
Not all tests require a blood sample or a visit to a clinic.
In 2012, the
If a person thinks they’ve contracted HIV, it can take anywhere from 1 to 6 months aftertransmissionfor a standard HIV test to produce positive results.
These standard tests detectantibodiesto HIV rather than the virus itself. An antibody is a type of protein that fights off pathogens.
According toAvert, third-generation HIV tests — which areELISAtests — can only detect HIV 3 months after exposure to the virus.
This is because it generally takes 3 months for the body to produce a detectable number of antibodies.
Fourth-generation HIV tests, which look for antibodies and the antigen p24, can detect HIV
According to the Centers for Disease Control and Prevention,
If a person thinks they’ve been exposed to HIV, they should tell their healthcare professional. A viral load test that directly measures the virus can be used to detect whether someone has recently acquired HIV.
If a person has received an HIV diagnosis, it’s important for them to monitor their condition on an ongoing basis.
Their healthcare professional can use several tests to do this. The two most common measures for assessing HIV transmission areCD4 count and viral load.
CD4 count
HIV targets and destroys CD4 cells. These are a type ofwhite blood cellfound in the body. Without treatment, the CD4 count will decrease over time as the virus attacks the CD4 cells.
If a person’s CD4 count decreases tofewer than 200 cells per cubic millimeter of blood, they’ll receive a diagnosis of stage 3 HIV, or AIDS.
Early and effective treatment can help a person maintain a healthy CD4 count and prevent the development of stage 3 HIV.
If treatment is working, the CD4 count should remain level or increase. This count is also a good indicator of overall immune function.
If a person’s CD4 countdrops below particular levels, their risk of developing certain diseases increases substantially.
Based on their CD4 count, their doctor may recommend prophylactic antibiotics to help prevent these infections.
Viral load
Viral load is a measure of the amount of HIV in the blood. A healthcare professional can measure the viral load to monitor the effectiveness of HIV treatment and the status of the disease.
When a person’s viral load is low orundetectable, they’re less likely to develop stage 3 HIV or experience its associated immune dysfunction.
一个人也不像ly to transmit HIV to others when their viral load is undetectable.
People with undetectable viral loads should still continue to use condoms and other barrier methods during sexual activity to prevent transmission to others.
Drug resistance
A healthcare professional may also order tests to learn if a strain of HIV is resistant to any medications used in treatment. This can help them decide whichanti-HIV drug regimenis most appropriate.
Other tests
A medical professional may also use other tests to monitor someone forcommon complications of HIVorside effectsof treatment. For example, they may order regular tests to:
- monitorliver function
- monitorkidney function
- check for cardiovascular and metabolic changes
他们也可能执行physical examsand tests to check for other illnesses or infections associated with HIV, such as:
- other STIs
- urinary tract infections (UTIs)
- tuberculosis
A CD4 count below 200 cells per cubic millimeters isn’t the only sign that HIV has progressed to stage 3 HIV. Stage 3 HIV can also be defined by the presence of certainopportunistic illnesses or infections, including:
- fungal diseases, such ascoccidioidomycosisor cryptococcosis
- candidiasis, or yeast infection, in thelungs, mouth, or esophagus
- histoplasmosis, a type of lung infection
- Pneumocystisjirovecipneumonia, which was previously known asPneumocystis cariniipneumonia
- recurrentpneumonia
- tuberculosis
- mycobacterium avium complex, a bacterial infection
- chronicherpes simplexulcers, lasting longer than one month
- isosporiasis and cryptosporidiosis, intestinal diseases
- recurrentsalmonellabacteremia
- toxoplasmosis, a parasitic infection of the brain
- progressive multifocal leukoencephalopathy (PML), a brain disease
- invasivecervical cancer
- Kaposi sarcoma (KS)
- lymphoma
- wasting syndrome, or extremeweight loss
As testing advances, researchers are hoping to find pathways to a vaccine or a cure in the coming years.
As of 2020, there areover 40 approved antiretroviral drugs on the marketwith new formulations and methods being researched all the time.
Current testing only detects markers of the virus as opposed to the virus itself, but research is finding ways
The virus mutates rapidly, which is one of the reasons it’s a challenge to suppress. Experimental therapies such as a
If a person has received an HIV diagnosis, it’s important for them to monitor their health closely and report any changes to their healthcare professional.
New symptoms may be a sign of an opportunistic infection or illness. In some cases, it may be a sign that their HIV treatment isn’t working properly or that their condition has progressed.
Early diagnosis and effective treatment can improve their frame of mind and lower the risk of HIV progression.