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Diphtheria is a bacterial infection caused by Corynebacterium diphtheriae. This condition can be characterised by white and grey blotches inside the throat which causes coughing and inflammation of the lymph nodes[1].

These blotches are also known as "pseudomembranes" and come about as a result of dead tissues in the respiratory system caused by the toxin produced by the bacteria. The poison may enter the patient's blood as well and result in kidney, nerve, and heart damage[2].

Diphtheria is a highly contagious bacterial infection caused by C. diphtheriae. The condition usually occurs from infection of the upper respiratory tract and symptoms include a sore throat, fever and malaise; a general feeling of illness and discomfort[3].


  1. https://www.cdc.gov/vaccines/pubs/pinkbook/dip.html
  2. https://www.cdc.gov/diphtheria/about/symptoms.html
  3. https://www.ncbi.nlm.nih.gov/pubmed/21413281 Murphy JR. EditorsIn: Baron S1, editor. SourceMedical Microbiology. 4th edition. Galveston (TX): University of Texas Medical Branch at Galveston; 1996. Chapter 32.
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