Cause of Infectious diseases
The pathogenic microorganisms (bacteria, virus, fungi, and parasites) can cause infectious diseases that can spread directly or indirectly from one individual to another. The pathogens cause disturbance to the normal processes by stimulating the immune system to activate the defense mechanisms resulting in high temperature, inflammation, and other symptoms. The symptoms of infectious diseases have its own specific signs and symptoms for a specific disease. The infectious disease caused by pathogens is one of the leading causes of death worldwide. It becomes difficult for the practitioners to control the infectious pathogens if they show resistance to common drugs. Scientists are researching for new approaches to treat infectious diseases on the evolution of pathogens and drug resistance.