1 An older antibiotic, but still in use, and effective where you might be allergic to the penicillins. However, it may cause various types of stomach upset, and so is usually kept in reserve.  Clindamycin is the 500lb. gorilla of tooth abscess antibiotics used in dentistry.
A communicable disease is an illness transmitted through contact with microorganisms. People, animals, food, surfaces, and air can all be carriers of the microorganisms that pass infectious illnesses from one host to the next.
Anderson received her associate degree in nursing from Lincoln University in Jefferson City, Mo. Top 10 Most Communicable Diseases Photo Credit Jupiterimages/Goodshoot/Getty Images. Communicable diseases are caused by pathogens passed from one human to another. Pathogens are viral, bacterial, parasitic and fungal. Methods of transmission include mucus, blood, breath, saliva and sexual contact.