Pathogens enter via open wounds, via the mucosal membranes and via inhalation or ingestion. If someone coughs on you and you swallow it, it will enter your body through your digestive tract and then it will be absorbed through your bloodstream. If you kiss someone and their saliva gets in your mouth, the pathogen will enter as described via the digestive system. Other ways are through body fluid exchanges, such as intercourse/ Another way that a pathogen enters is via the respiratory system (you inhale someone's cough or breath). Pathogens are harmful germs such as Virus, bactria, fungus, or Tuberculosis.
