Question

1. What are infectious diseases, pathogen, bacteria, viruses and parasites? Differentiate between transmissible and non-transmissible diseases.  Describe the global threat from tuberculosis and list three factors that have helped it spread.  Summarize the threats from hepatitis B, Ebola, West Nile, and Zika viruses. What is the best way to reduce one's chances of getting an infectious disease? What are threats of this pandemic (both current and projected threats)? What is the best way to reduce one's chances of getting it?

Answer 1

Infectious diseases: These are the diseases which are caused by certain type of bacteria, viruses,fungus, parasites etc.

Pathogen:- It is any microorganism such as bacteria,fungi, viruses which has the ability to cause the disease.

Bacteria:- These are microscopic, single-celled microorganism which can be present in any diverse environments.

Viruses: Viruses are sub-microscopic infectious agents that replicates only inside the living cells.

Transmissible & Non-transmissible diseases