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

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.