what are the limitations tn deal with infectious diseases

The three limitations which one has to face while dealing with an infectious disease are:(i) The body functions are damaged drastically and may never recover completely if not cared.(ii) The treatment will take time, which means that someone suffering from a disease is likely to be bed-ridden for sometime.(iii) The person suffering from an infectious disease can serve as a source from where the infection may further spread to other people.