HIV (Human immunodeficiency virus) causes AIDS. This virus attacks our immune system, and after some period it can complete destroy it! This means that our body is at risk of getting cancers and infections. People infected with this virus, cannot be cured, and they will carry that virus for life!
This virus can be transmitted through sexual contact (vaginal, anal and oral sex), through blood (needle sharing or by blood transfusions) and from mother to child (while pregnancy, because mother share blood with her fetus and through breastfeeding). Because many people avoid HIV positive people, here are several examples of how you cannot get this virus. Casual contacts cannot transmit a virus. Even kissing is possible, but if you have a wound in your mouth, you can get infected! Mosquitoes, participating in sports and touching the items that were touched by an infected person, cannot be responsible for spreading the virus.
Many people who are suffering from this disease have no symptoms! The rest of them can have: diarrhea, fever, mouth sores, headache, muscle aching, night sweats, rashes, sore throat and swollen lymph glands. An HIV infection will progress over several months in asymptomatic HIV infection (no symptoms). Although, the virus can stay in this stage 10 and even more years, a person can still spread the virus! Almost all of infected people with HIV virus will develop AIDS. Only a small group of people develops AIDS very slowly or never. Those people are known as nonprogressors. The explanation is in their genes, which prevent the virus from destroying their immune system!
Although there is no cure for this disease, there are several treatments that will slow down the virus (its replication) and improve the length and quality of life of people who already have symptoms.