The causes of communicable diseases.. Viruses. Bacteria. Single or multiple cell parasites. Fungus

1 - viruses (colds, flu, measles, caffeine).
2 - bacteria (tuberculosis, hemorrhoids).
3. Single-cell parasites (AIBA, malaria).
4- Multiple cell parasites (Iskars).
5 - Rectasia (typhus).
6 - fungi (herpes).