If someone with HIV is diagnosed with one of these opportunistic infections (even if the CD4 count is above 200), he or she is said to have AIDS. AIDS usually takes time to develop from the time a person acquires HIV--usually between 2 to 10 years or more.
It has been thought that the wheel was invented in 8000 B.C but the oldest discovered wheel dates back to 3500 B.c. It was discovered in Mesopotamia (nowadays in Iraq). Below are the timelines of wheels and its usage in different era.
The largest Catherine wheel measured 32.044 m (105 ft 1.56 in) in diameter and was built by Lily Fireworks Factory, in Mqabba, Malta, on 18 June 2011. The structure was free-standing and the Catherine wheel completed 4 revolutions under its own propulsion.