<prompt> All of the following are true regarding Legionella except.Legionella can be grown on complex mediaL. pneumophila serogroup 1 is the most common serogroup isolated from humansLegionella are communicable from infected patients to othersL. pneumophila is not effectively killed by polymorphonuclear leukocyte  <response>: Ans. is c i.e., Legionella are communicable from infected patients to othersRef: Harrison, 19the, p. 1014; Ananthanarayan, 9the, p. 401 No man to man transmission occurs. Aspiration is predominant mode of transmission. Other modes include aerosolization, direct instillation into lungs. Aerosolization by AC, nebulizer, humidifier, overhead showers and direct installation into lungs are other modes. Aerosol spread leading to epidemics. 