HIV and AIDS (16) Flashcards
Acquire Immunodeficiency Syndrome
Affects the body’s immune system where it becomes deficient in combating disease
To be classified as AIDS (under CDC)
Positive blood test indicating the presence of HIV, CD4 (T-cell) count below 200, Have one or more of the disease associated with AIDS
Conditions Associated with AIDS
CDC list 20 conditions to be used with diagnosing AIDS with HIV status; Opportunistic infections, Cancer, Clinical Conditions, Other Conditions
Opportunistic infections
Diseases that take advantage of the weakened immune system, these diseases do not develop in healthy people
Clinical Conditions
Wasting syndrome, Persisting diarrhea
Symptoms of HIV Infection
Within 2-4 weeks after being infected a person may develop flulike symptoms (last several days/weeks some have no symptoms); Person may appear and feel healthy for years (10+) after becoming infected; Even if feeling healthy, the virus is still affecting the body
Effects on T- Cells
The immune system process starts to break down immediately; HIV injects its content into the host T-cell and copies it own genetic code into the cells DNA; The immune system is activated the T-cells begins producing HIV instead of replicating itself and the T cell is killed in process
How the disease progresses
Most people will develop detectable antibodies with in 3-8 weeks after exposure; T-cells (CD4) count # of helper T cells that are present in a cubic millimeter of blood; Healthy persons average - @ 1,000 can range from 500 – 1600 depending on a persons health
Time between infection with HIV and development of AIDS can range from…
a few months to years; Individuals with HIV taking medication can live a ling time before immune system is damaged for AIDS to develop
When 1st infected, an individual may experience what symptoms?
Flu like symptoms immune system goes into high gear to flight off invader
Phases of Infection
T-cell may temporarily plunge and virus rapidly replicates the virus is dispersed throughout the lymph nodes and replicates AKA = seeding; Virus may stay localized for years but continues to replicate and destroy T cell; Viral load is high- person in most contagious
World Health Organization (WHO) reports on AIDS
More than 39 million people have died form AIDS, Estimated that 37 million individuals are living with the infection (African continues to be the most impacted region)
World Health Organization (WHO) reports that rate of new infections have declined except for where?
Eastern Europe
WHO/UNAIDS believe that HIV epidemic can be ended but needs accelerated response through what?
The year 2030 and beyond; Reaching key populations to keep decreasing infections
Transmission of HIV
HIV is spread by bodily fluids
Risk of HIV transmission depends on type of exposure or behavior
Primary Ways of Transmission
Sexual Transmission (anal or vaginal) without condom or taking medication to prevent Sharing needles or other equipment used to prepare drugs for injection, rinse water
Less Common Ways of Transmission (Less frequent)
Mother to child during pregnancy, birth or breastfeeding
Being stuck with a needle
Rare ways: rare occasions HIV has been transmitted by:
Oral Sex, Receiving blood transfusion/organ transplants , Deep open mouth kissing, Being bitten by a person with HIV, Contact between broken skin, wounds, mucous membrane, and HIV contaminated blood
Oral Sex
Can contact via cuts or sores, person performing oral sex is at greater risk
Deep Open Mouth Kissing
Risk of transmission can occur from bleeding gums, sores, cuts
Can condoms prevent HIV?
Yes, if used correctly and consistently
Preventative Medicine
July 2012 FDA approved a drug to reduce the risk of acquiring HIV infection – has been shown to helpful in blocking HIV – taken daily - known as pre-exposure prophylaxis or PrEP
Who should use preventative medication?
Used by people that are at very high risk and are willing to take the medicine daily to lower their chances of getting infected
Highly effected for preventing HIV if used as prescribed less effective when not taken consistently
PEP (post exposure prophylaxis)
option for an individual who thinks they have been exposed to HIV; Taking antiretroviral therapy, Used in emergency situations, Must be started with in 72 hours after a recent possible exposure sooner the better, Not a substitute for prevention