Human reservoir – from coughing, sneezing to sex contact Carrier – is shedding pathogen Subclinical infection someone who is not sick who has it, transfers it to others Acute carrier – someone who is sick for a few days to a few weeks Chronic carrier – a long term carrier Nosocomial – a hospital acquired infection 2. Animal reservoir – zoonoses – from an animal reservoir Zoonotic disease – most emerging diseases ; species jumping; rabies, Lyme, west nile; lizards, snakes, chickens, turtles, rodents; under the radar; 3. Inanimate - not in a live state; water, soil Transmission of disease Direct contact transmission – person to person transmission Universal precautions – prevention against blood borne pathogens; masks and gloves Indirect contact transmission – no touch with actual infected person; just contact with tissues, phones, fomites that are contaminated with infected material Fomite an inanimate object, nonliving, hard structure material Aerosols or droplets - In the air Vehicle Transmission Airborne - 1 m or farther away from original source Water borne - in the water; ex: cholera (salads, chopping boards) Food borne in the food;