Which virus causes AIDS?
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HIV
It attacks the defence cells of the immune system.
💡 Did you know? „HIV“ stands for Human Immunodeficiency Virus.
13 questions · History
In the early 1980s a mysterious new illness appeared in the USA: in previously healthy young people the immune system suddenly collapsed. The condition soon got a name: AIDS, the „acquired immune deficiency syndrome“. It is caused by the Human Immunodeficiency Virus (HIV), which attacks and destroys the body's defence cells. Without a working immune system, otherwise harmless pathogens become deadly. The virus spreads through blood, unprotected sex and from mother to child: but not through everyday contact. In the early years infection was almost a death sentence, and the disease was accompanied by fear, stigma and exclusion. The medical turning point came with antiretroviral therapy: a combination of drugs suppresses the virus so strongly that today those affected live largely normal lives and can no longer infect others. A vaccine is still lacking, but education, condoms and testing have slowed the spread. Millions of people worldwide live with HIV; the pandemic has profoundly changed our understanding of viruses, the immune system and public health.
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HIV
It attacks the defence cells of the immune system.
💡 Did you know? „HIV“ stands for Human Immunodeficiency Virus.
Acquired Immune Deficiency Syndrome
It is the final stage of an HIV infection.
💡 Did you know? The body can then barely defend itself.
The 1980s
The first cases were noticed in the USA in 1981.
💡 Did you know? At first the cause was completely unknown.
The immune system
It destroys key defence cells (T-helper cells).
💡 Did you know? This makes harmless germs life-threatening.
Through blood and sexual contact
It can also pass from mother to child.
💡 Did you know? But not through everyday contact.
Antiretroviral therapy
A drug combination keeps the virus in check.
💡 Did you know? Those affected can live an almost normal lifespan.
No
If the virus is undetectable, it is not transmittable.
💡 Did you know? Experts summarise this as „U = U“.
The condom
It prevents the exchange of body fluids.
💡 Did you know? Awareness campaigns made it known worldwide.
From apes
It probably jumped from chimpanzees to humans.
💡 Did you know? Such crossings are called zoonoses.
No
The virus mutates too fast for a vaccine.
💡 Did you know? Research into it has run for decades.
PrEP
Healthy people take it to protect against HIV.
💡 Did you know? It greatly lowers the infection risk.
The red ribbon
It is worn especially on World AIDS Day.
💡 Did you know? World AIDS Day is on 1 December.
Southern Africa
Most people living with HIV are there.
💡 Did you know? Aid programmes brought the numbers down sharply.
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