P H 101 Lecture Notes - Lecture 4: Bubonic Plague, Yellow Fever, Smallpox
Document Summary
What is an infectious disease- who definition (cid:862)i(cid:374)fe(cid:272)tious disease a(cid:396)e (cid:272)aused (cid:271)y pathoge(cid:374)i(cid:272) (cid:373)i(cid:272)(cid:396)oo(cid:396)ga(cid:374)is(cid:373)s: such as bacteria, viruses, parasites, fungi, diseases are spread directly or indirectly from one person to another. Examples for the past: bubonic plague (cid:862)(cid:271)la(cid:272)k death(cid:863, tuberculosis, smallpox, cholera, yellow fever, measles. Public health measures: purification of water, proper disposal of sewage, pasteurization of milk. Infectious agent is something that infiltrates another living thing, like you. When infectious agent hitches a ride, you become an infected host. There are four main classes of infectious: bacteria, viruses, fungi, parasites. Bacteria: tuberculosis, cholera, typhoid, tetanus, diphtheria, dysentery, syphilis. Viruses: small pox, aids, yellow fever, rabies. The transmission pattern is composed of links: pathogen (infectious agent, reservoir, means of transmission, susceptible host. Public health measures to control the spread of disease are aimed at interrupting the chain of infection at whichever links are most vulnerable. Touching contaminated object and putting hands to mouth, nose, eyes.
