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Q. |
Which one of these is a communicable disease? |
A. | Diabetes |
B. | Diphtheria |
C. | Arthritis |
D. | Cancer |
Answer» B. Diphtheria | |
Explanation: Diphtheria is an upper respiratory tract illness caused by Corynebacterium diphtheriae, a facultative anaerobic, Gram- positive bacterium. Diphtheria is a contagious disease spread by direct physical contact or breathing the aerosolized secretions of infected individuals. Diphtheria toxin is produced by C. diphtheriae only when infected with a bacteriophage that integrates the toxin-encoding genetic elements into the bacteria. |
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