Detectable antibody in normal healthy people. Keeping in mind that they are already infected. Cause health surveillance by a number of symptoms of the disease in the future.
The detection of antibody against infection in healthy normal people. Make note that there is an infection. Caused by health surveillance is not showing symptoms of the disease in the future.
The application has been detected, the foolish, the bacteria in the normal and healthy to know that there is an infection, and then make the watch by the health care, there are no symptoms of the disease in the future.