Microbiology . A 60-year-old man is diagnosed to be suffering from Legionnaires’ disease after attending a conference. How did he acquire it? A From a chronic carrierof the disease B From inhalation of aerosol in the air-conditioned room at the conference C Following a mosquito bite at the conference D By sharing a towel with a fellow colleague in the conference 💡 Explanation . A 60-year-old man is diagnosed to be suffering from Legionnaires' disease after attending a conference. How did he acquire it? ✓ Correct Answer: B. From inhalation of aerosol in the air-conditioned room at the conference