Quarantine
A period of isolation decreed to control the spread of infectious disease. Before the era of antibiotics and other medications, quarantine was one of the few available means for halting the spread of infectious diseases.
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- Quasi-
Prefix meaning seemingly, as in quasidominant (seemingly dominant).
- Quasidiploid
Describing a cell that seems to have the usual two full sets of 23 chromosomes, but does not. Many malignant cells are quasidiploid. Also called pseudodiploid.
- Quasidominant
Pattern of inheritance that seems due to a dominant trait but is in fact due to the mating of a person who has a recessive disorder (with two copies of a gene causing the disease) with someone who is an asymptomatic carrier (with one copy of the same gene but no symptoms).
- Quater in die (on prescription)
If a medicine is to be taken every so-many hours, it is written “q_h”; the “q” standing for “quaque” and the “h” indicating the number of hours. So, for example, “2 caps q4h” means “Take 2 capsules every 4 hours.”
- Queensland tick typhus
One of the tick-borne rickettsial diseases of the eastern hemisphere. Queensland tick typhus is similar to Rocky Mountain spotted fever, another tick-borne rickettsial disease, but is less severe. The clinical features of Queensland tick typhus include fever, a small ulcer (eschar) at the site of the tick bite, swollen glands nearby (satellite lymphadenopathy), and a […]