Microbiology Essay Example | Topics and Well Written Essays - 250 words - 6

Microbiology - Essay Example ganisms is the ability to ferment lactose with the production of acid and gas which is detectable through a 24-48 hour incubation period at 37 degrees. Among these three, S.aureus is the most pathogenic and is known to be a strong nosocomial pathogen. The pathogenicity of S.aureus is a result of a number of virulence factors. The structure as well as the excreted products of this organism plays a crucial role in its pathogenicity. The ability to survive and the increasing resistance to anti-bacterial agents make it more pathogenic. The factors that determine the pathogenicity of S.aureus are- presence of surface protein (MSCRAMMs) that promotes easy adherence to hosts, invasins which help the bacteria spread in the host tissues (Gordon & Lowy, 2008), factors present on the surface of the capsule that inhibits phagocyctosis, secretions of toxic substances that damage host tissue, biochemical ability that allows survival in phagocytes and acquired resistance to strong antimicrobials e.g. Methycillin resistant