CD and NCD Flashcards
What is a communicable disease?
An illness caused by a specific causative agent that spreads between hosts.
What are examples of viral communicable diseases?
Measles, smallpox, and rabies.
What are examples of bacterial communicable diseases?
Tuberculosis, cholera, and syphilis.
What are examples of fungal communicable diseases?
Candidiasis, Tinea Capitis, and Histoplasmosis.
What is an infectious agent?
Any microorganism that causes disease.
What is a reservoir in epidemiology?
The habitat where an infectious agent lives and multiplies.
What is zoonosis?
A disease transmitted from animals to humans.
What are examples of zoonotic diseases?
Rabies, anthrax, and Lassa fever.
What is the incubation period?
The time between exposure to an infectious agent and symptom onset.
What are the key characteristics influencing disease formation?
Infectivity, pathogenicity, virulence, and antigenic power.
What is infectivity?
The ability of an agent to enter and multiply in a host.
What is virulence?
The severity of disease an agent causes.
What is a carrier in epidemiology?
A person who harbors a disease-causing agent without symptoms.
What are the types of disease carriers?
Incubatory, convalescent, intermittent, chronic, and healthy carriers.
What is immunity?
The body’s resistance to infection through antibodies or cellular defense.
What are the two main types of immunity?
Natural and acquired immunity.
What is active immunity?
Immunity developed through infection or vaccination.
What is passive immunity?
Immunity acquired from external antibodies (e.g., maternal or injection).
What is herd immunity?
Community-wide resistance to a disease due to high immunity levels.
What is a vaccine?
A biological preparation that provides immunity to a disease.
What are examples of vector-borne diseases?
Malaria, yellow fever, and dengue fever.
What is direct disease transmission?
Spread of disease through person-to-person contact.
What is indirect disease transmission?
Spread of disease through surfaces, vectors, or air.
What is an example of a vehicle-borne disease?
Cholera (transmitted through contaminated water).