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17 Cards in this Set
- Front
- Back
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antigenic drift |
Minor antigenic changes in the influenza A virus due to mutations in the spikes’ genes. |
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antigenic shift |
Major changes in the influenza A virus due to recombination of viral strains from two different host species. |
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caseous lesion |
Lesion typical of tuberculosis which is necrotic area of lung tubercle superficially resembling cheese. |
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catarrhal |
A term referring to the secretion of mucus or fluids; also a term describing first stage of pertussis. |
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convalescent phase |
Stage of a disease characterized by absence of symptoms and clearing of pathogens. |
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erythrogenic toxin |
An exotoxin produced by lysogenized group A strains of β-hemolytic streptococci that is responsible for the severe fever and rash of scarlet fever in the nonimmune individual. Also called a pyrogenic toxin. |
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extrapulmonary tuberculosis |
A condition in which tuberculosis bacilli have spread to organs other than the lungs. |
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induration |
Area of hardened, reddened tissue associated with the tuberculin test. |
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Mantoux test |
An intradermal screening test for tuberculin hypersensitivity. A red, firm patch of skin at the injection site greater than 10 mm in diameter after 48 hours is a positive result that indicates current or prior exposure to the TB bacillus. |
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MDR-TB |
Multidrug-resistant tuberculosis. |
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nephritis |
Inflammation of the kidney. |
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paroxysmal |
Events characterized by sharp spasms or convulsions; sudden onset of a symptom such as fever and chills. |
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pneumonia |
An inflammation of the lung leading to accumulation of fluid and respiratory compromise. |
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streptolysin |
A hemolysin produced by streptococci. |
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tubercle |
In tuberculosis, the granulomatous well-defined lung lesion that can serve as a focus for latent infection. |
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tuberculin reaction |
A diagnostic test in which PPD, or purified protein derivative (of M. tuberculosis ), is injected superficially under the skin and the area of reaction measured; also called the Mantoux test. |
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XDR-TB |
Extensively drug-resistant tuberculosis (worse than multidrug-resistant tuberculosis). |
