Common and Scientific Name AIDS- (Acquired Immune Deficiency Syndrome), is caused by HIV (human immunodeficiency virus).Classificationlentivirus (a subgroup of retrovirus) that causes HIV infection and leads to AIDS.SymptomsAfter going through all the stages of HIV, which initially start with flu like symptoms like fever, swollen lymph glands, and aches and pains. The symptoms of AIDS can vary because by this time the immune system is very weak and has a hard time fighting infection. Some symptoms are neurologic problems and recurrent fever but can be at risk for tuberculosis, cancer, and kidney disease because of weakened immune system. Mode of Transmission and LocationYou contract HIV by having unprotected sex and the sharing of blood, semen, vaginal fluids, or breast milk of someone who is infected. Other ways HIV can be transmitted is through needles, home tattooing, blood transfusions, childbirth, breastfeeding, and organ transplants. HIV is most commonly found in Sub-Saharan Africa, and in 2015, 25.6 million people were estimated to be living with HIV. TreatmentThere are no treatments to HIV or AIDS, but antiretroviral treatment can control it and can slow down the disease’s progress and help people live a better life. PrognosisIf treated correctly people can live up until their full life expectancy with HIV, if proper medication is taken regularly. A person living with HIV who isn’t on treatment is still more likely to develop AIDS and experience an early death. The average life expectancy of someone with HIV with antiretroviral treatment is 78 years old. If you have HIV without treatment you will have an average of 9-11 years to live and 2 years if it has transitioned into AIDS. PreventionThe best way to prevent HIV/AIDS is to avoid activities that cause the exchange of bodily fluids. You can do this by using a condom during sex and using sterile needles to inject drugs. Also, telling your partner if you have HIV/AIDS, and if you’re pregnant get medical care right away.