How?
•The precursor to AIDS is Human Immune Deficiency Virus. HIV is a very resilient
retro-virus.
•After an adult is infected with HIV, he or she usually has no obvious symptoms for 5 to 10 years. During this time, however, the virus is slowly attacking the immune system. When the immune system is weakened enough, it becomes susceptible to other organisms that the body can usually fight off or keep under control.