The Black Death, also known as the Great Plague, the Black Plague, or simply the Plague, was one of the most devastating pandemics in human history, resulting in the deaths of an estimated people in Eurasia and peaking in Europe from 1347 to 1351.
Blood transfusion is generally the process of receiving blood or blood products into one's circulation intravenously.
A disease is any condition which results in the disorder of a structure or function in an organism that is not due to any external injury.
An epidemic (from Greek ἐπί epi "upon or above" and δῆμος demos "people") is the rapid spread of infectious disease to a large number of people in a given population within a short period of time, usually two weeks or less.
Filariasis is a parasitic disease caused by an infection with roundworms of the Filarioidea type.
In biology and medicine, a host is an organism that harbours a parasitic, a mutualistic, or a commensalist guest (symbiont), the guest typically being provided with nourishment and shelter.
Malaria is a mosquito-borne infectious disease affecting humans and other animals caused by parasitic protozoans (a group of single-celled microorganisms) belonging to the Plasmodium type.
Mosquitoes are small, midge-like flies that constitute the family Culicidae.
Needle sharing is the practice of intravenous drug-users by which a syringe is shared by multiple individuals to administer intravenous drugs, and is a primary vector for diseases which can be transmitted through blood (blood-borne pathogens).
A quarantine is used to separate and restrict the movement of people; it is a 'a restraint upon the activities or communication of persons or the transport of goods designed to prevent the spread of disease or pests', for a certain period of time.
Sexual intercourse (or coitus or copulation) is principally the insertion and thrusting of the penis, usually when erect, into the vagina for sexual pleasure, reproduction, or both.
Tuberculosis (TB) is an infectious disease usually caused by the bacterium Mycobacterium tuberculosis (MTB).
Yellow fever is a viral disease of typically short duration.