Biology- The course of AIDS.

The stages of the course are dependant on many factors-
the health of the host before infection, the genetic resistance to infection, the quality f the immune system before infection, lifestyle and nutrition and the availability of the expensive and complicated drug treatment. there is no cure for AIDS.

there are three phases of AIDS.

The acute phase:

• HIV antibodies appear in the blood after 3-12 weeks.
• The infected person may suffer from symptoms such as fever, sweats, headaches, sore throats and swollen lymph nodes. or they may have no symptoms at all.
• there is rapid replication of the virus and loss of T helper cells.
• after a few weeks, the infected T helper cells are recognised by T killer cells which start to destroy them. this greatly reduces the rate of…