The symptoms of HIV can differ from person-to-person and some people may not get any symptoms at all for many years. Without treatment, the virus will get worse over time and damage your immune system. There are three broad stages of HIV infection, with different possible effects.
What are the three levels of cultural complexity that sociologists use to study different cultures? The three levels are perception, aspects that are below the conscious levels, and patterns of behavior. Each of these can be used to help learn about a society. Edit
The micro level deals with the daily actions and interactions of people in society. It examines the social roles that we take on within society as well as how we react to society and understand it. At this more intimate level the focus is on how people think within society opposed to their behavior. Micro level study of society hones in on the smallest elements that create the idea of what a society is, the norms and behaviors that make it recognizable as a its own society. Ritual, socialization, segregation of activities and sanctions are all indicators as to how one should interact within a society.