Plague and its forms caused by Yersinia pestis

Plague and its forms caused by Yersinia pestis

What is the Plague? Plague, a term originally applied to any widespread disease which causes great mortality. The name is now confined to Bubonic Plague, an infectious disease of animals and humans caused by the bacterium Yersinia pestis. History In AD 541, the first great plague pandemic spread throughout the world from …

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Treponema pallidum – An Overview

Treponema pallidum

Classification Class- Spirochaetes Order- Spirochaetales Family- Spirochaetaceae Genus- Treponema Species- Treponema pallidum Image Source: Russell Publishing Limited. Morphology of Treponema pallidum Treponemes are thin, delicate, helically coiled, corkscrew-shaped organisms. They are microaerophilic and actively motile. They are measures about 10 to 14 micrometers long and 0.1 to 0.2 micrometer wide. They have …

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Bacterial diseases- pathogen, symptom, prevention, treatment

Bacterial diseases

Image Source: Microbiology Society. Some of the bacterial diseases with their name of pathogen, transmission, symptom, treatment, and prevention are as follows: 1- Tuberculosis Pathogen – Microbacterium tuberculosis. Mode of transmission – Transmitted by air. Symptom – Bacteria damage the tissues mainly of the lung, the occurrence of fever, and a bloody …

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Pathogenicity and Clinical manifestation of Salmonella Typhi

Pathogenicity and Clinical manifestation of Salmonella Typhi

Pathogenesis of Salmonella Typhi (Enteric fever/Typhoid fever) Enteric fever is usually caused by strains of Salmonella Typhi & Paratyphi A, B, and C. Enteric fever is generally characterized by infection of reticuloendothelial system & intestinal lymphoid tissue accompanied by sustained fever & bacteremia. The transmission occurs via oral route usually with contaminated …

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Vancomycin-resistant bacteria: VRSA and VRE

Vancomycin-resistant bacteria VRSA and VRE

Vancomycin-resistant bacteria: VRSA and VRE What is Vancomycin? Vancomycin is a glycopeptide antibiotic that is used to treat bacterial infections in the intestinal tract caused by Clostridium difficile and Staphylococcus infections and Enterococcus spp that cause inflammations in the large and small intestines. It can be administered in two ways, orally and …

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Superbugs as Global Crisis

Superbugs as Global Crisis

Superbugs microbes that become resistant to the drugs that should destroy and kill them can be bacterial or fungal strains Image Source: Tincture and Business Insider Sources/ Factors of Resistance Natural selection Antibiotic resistance gene “flow” in nature Resistance genes in plasmids transferred from one bacteria to another Resistant microorganisms become predominant …

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Isolation and Identification of Vibrio cholerae from faecal sample

Isolation and Identification of Vibrio cholerae from faecal sample

Isolation and Identification of Vibrio cholerae from faecal sample Introduction Vibrio is short, curved, Gram-negative rods measuring 2×0.5 µm and that is motile by its single polar flagellum. It is a facultative anaerobe that produces acid from carbohydrate fermentation. The growth of most species of Vibrio is facilitated by Na + ion …

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Escherichia coli (E. coli) O157:H7

Escherichia coli O157H7

What is Escherichia coli O157:H7? Escherichia coli O157:H7  is a serotype of enterohemorrhagic E. coli which is Shiga toxin-producing. It produces Shiga toxin 1 (Stx1) and/or Shiga toxin 2 (Stx2) as the virulence factors that contribute to its pathogenicity by the formation of attachment and effacing (A/E) lesions on human intestinal epithelium. …

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