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Micrococcus Luteus: Alexander Fleming

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Organismal Reports
Micrococcus luteus
Micrococcus luteus was first isolated and discovered in 1929 by Alexander Fleming. Is a gram positive bacteria that is commonly found on human skin, water, soil and dust. Since it is an obligate aerobe and thrives in the presence of oxygen, it is also found in the human respiratory tract. It takes the shape of cocci and is often clumped irregularly, in tetrads, or groups of four. It is also non-motile and does not form endospores. Although it has a specific optimal temperature range of about 37 to 45 degrees Celsius, it is halophilic. Micrococcus luteus is also catalase positive, meaning that it produces an enzyme that protects it from any harmful oxygen metabolism by-products (Bergey, 1923).
A defining
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Its genus, Klebsiella, is named after a German microbiologist named Edwin Klebs. It is unique in that it contains a strong polysaccharide capsule on the outer surface of the cell. This outer layer helps the bacteria to resist against host defense mechanisms and prevents its ability to die by phagocytosis (Centers for Disease Control and Prevention, 2012).
As a facultative anaerobe, Klebsiella is usually found in human intestines or stool, where it is harmless. However, it has recently become a more important pathogen if it gets in the respiratory tract or bloodstream of a person with poor health or a compromised immune system (Guentzel, ). It commonly causes nosocomial, or hospital-acquired infections, which are contracted through the contaminated hands of healthcare workers, catheters or other equipment that is not sterile. These infections normally occur in patients that are being treated in the hospital for some other reason. Some examples of Klebsiella induced syndromes are Urinary Tract Infections, bacteremia, pneumonia, diarrhea, meningitis and osteomyelitis. According to the Pennsylvania Department of Health (2017), the mortality rate of a Klebsiella infection is around ninety percent in most countries. Additionally, it has become increasingly hard to treat infections caused by Klebsiella due to its ability to resist certain
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