What do you know about Legionnaires’ disease?


A     is caused by a Gram-positive coccus

B     is a chronic infectious disease

C     has an incubation period of 2 days to 3 years

D     is characterised by the development of pneumonia

E     may be prevented by vaccination


  1. D is the answer and the winners are solace and Essein.
    Details below :
    Legionnaires’ disease is an acute respiratory tract infection caused by a
    Gram-negative bacillus of the Legionella species. It is characterised by the
    development of pneumonia. The incubation period is from 2 to 10 days. The
    condition is attributed to the inhalation of water droplets, such as from water
    generated in air-conditioning cooling systems and in hot-water systems, that
    are contaminated with the microorganism. Prevention techniques are based
    on the maintenance of air-conditioning filters and water systems.


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