An infectious disease occurs when there is a harmful alteration to the physiological or metabolic state: Microbiology Essay, UM, Malaysia


Universiti Malaya (UM)

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Question 1

An infectious disease occurs when there is a harmful alteration to the physiological or metabolic state of the host caused by a microorganism or its products. such as toxins.

  • Pathogenicity is the capacity of an organism to produce a disease. Describe the pathogenesis of cholera.
  • Using Koch’s postulates. determine the microorganism that caused cholera.
  • Explain TWO limitations of Koch’s postulates.

Question 2

The recent outbreak of coronavirus disease 2019 (COVID-191. caused by a new coronary virus. SARS-CoV-2. is a great threat to public health. Up to February 11. 2020. it is reported that over 70,000 persons have been infected with SARS-CoV-2 in China.

  • Explain THREE levels of prevention In epidemiological studies of Infectious diseases.
  • Some individuals who are exposed to pathogens might not result in infection. Explain the factors contributing to the infection.
  • Malaysia reached its target of fully vaccinating 80% of the adult population, achieving herd immunity for adults against Covid. Describes herd immunity.

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