A Civilization is a society in which large numbers of people share a variety of common elements. It is a society or culture â¦ group normally defined as a complex society characterized by the practice of agriculture and settlement in cities. Civilization is a society in which large numbers of people share a variety of common elements. It is a society or culture â¦ group normally defined as a complex society characterized by the practice of agriculture and settlement in cities.
An example of a type of infection seen a lot in AIDS patients is Pneumocystis jiroveci pneumonia (aka PCP). The way HIV works is that once a person gets infected with the virus, it takes about 4 to 10 weeks before it can be detected in the blood (aka seroconversion). For a small group of people, it may even be more than that. At that time, the person may or may not be experiencing any symptoms.
The window period refers to the time after infection and before seroconversion, during which markers of infection (HIV-specific antigen and antibodies) are still absent or too scarce to be detectable.Standard screening tests cannot reliably detect HIV infection until after the window period has passed.t is therefore possible to say HIV RNA becomes detectable approximately eleven days before antibodies (or that use of an HIV RNA test reduces the window period by eleven days). It is more challenging to say how many days after exposure HIV RNA is detectable, or what the total length of the window period is.