Before revision: Epidemiology – study of cause and prevalence of diseases and programs to contain them First aid – assistance given to any person suffering a sudden illness or injury, with care provided to preserve life, prevent the condition from worsening, and/or promote recovery.
After revision: Epidemiology – study of cause and prevalence of diseases and programs to contain them First aid – assistance given to any person experiencing a sudden illness or injury, with care provided to preserve life, prevent the condition from worsening, and/or promote recovery.