MCB 2610 Midterm: Microbe minute exam 1
22 Sep 2016
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Document Summary
Discovered 1894 alexandre yersin swiss french physician. 3 forms- bubonic, septicemic-most deadly, kills before symtoms and pneumonic. Bubonic: bacteria mass in lymph nodes causing infection and bacteremia. Pneumonic: infections spread to lungs, highly contagious, rapidly fatal spread through respiratory droplets. Septicemic: infection from lymph nodes to blood, coagulation of blood, can cut off circulation. Black death: 1340s european outbreak: started in italy moved north, 1347 england 1/3 pop. 1347 plague victims were catapulted by the mongols over the city walls of caffa crimea. Wwii 1940 japaneese airplane flying over cina realeaed rice and wheat plus fleas carrying y. pestits. 1933 us, leon fox, proposed to drop infected rats from planes. Discovered by robert koch in 1882, won noble prize. Acid fast due to high content mycolic acid in cell wall which makes it impenetrable to the gram strain. Today 1/3 of the world pop is infected. Tb causes direct death of more than 50% of aids patient.
