The correct answer is over 1.6 million cases.
Acquired immune deficiency syndrome (AIDS) refers to a serious and life-threatening chronic disease that harms and compromises the functioning of the immune system. AIDS is caused when an individual is infected by the human immunodeficiency virus (HIV). AIDS can be contracted by factors such as: exposure to bodily fluids infected with HIV (blood, semen, rectal fluids, etc.), sharing injections or needles, breastfeeding, etc.