Diseases

Definition

Diseases refer to abnormal conditions affecting living organisms that impair normal bodily functions. They can be caused by pathogens such as bacteria, viruses, parasites, or non-infectious factors like genetic disorders or environmental pollutants.

Related terms

Epidemic: An epidemic refers to the rapid spread of an infectious disease among many individuals within a specific population or region.

Pandemic: A pandemic occurs when an epidemic spreads over multiple countries or continents, affecting large populations globally.

Vector-borne Diseases: Vector-borne diseases are infections transmitted to humans through vectors like mosquitoes (e.g., malaria), ticks (e.g., Lyme disease), or fleas (e.g., bubonic plague).