Micr 221 Exam Questions With Answers All Revised And Updated

MICR 221 EXAM QUESTIONS WITH ANSWERS ALL REVISED AND UPDATED Pneumonic plague - Answer-lung infection, can spread from human to human. When people cough, tiny droplets move through the air, Plague - Answer-1st use of quarantine, not very useful. killed one third of European population. First use of germ warfare Typhoid fever - Answer-transmitted by ingestion of food or water contaminated. Contain the bacterium Salmonella typhi and serotype typhi Fracastoro - Answer-Italian scientist who published one of the oldest manuscripts talking about contagious disease Talked about a guy named Syphilus who had a venereal disease (transmitted through sexual intercourse) Semmelweis - Answer-15% of woman died of giving fever because of puerperal fever. Doctors didn't wash their hands after giving autopsies. Made a policy to wash hands and death rate dropped to 1%. Dies from Streptococcus pyogenes (puerperal fever) infection Joseph Lister - Answer-impressed by Pasteur's theory about microorganisms in the air, aware of the Semmelweis work, applied all of these theories and washed hands and disinfected instruments before surgery "Father of Antiseptic surgery" Robert Koch - Answer-Taught the first course on microbiology Worked on anthrax which is level 3 organism mainly found on cows, but humans can get it too "Bacillus anthracis" He discovered what is necessary to be able to tell if a microorganism causes a disease! 1- the organism must be present in every case of the diesease! 2- you must be able to isolate the organism, get it in pure culture and inject that pure culture into a healthy animal and cause the dieasease 3- From that animal that you trasnferred the disease to, you must be able to isolate the pure culture of the microorganism!