legionella pneumophilia bacteria in water, causing legionnaires' disease, medically 3d , generative ai

legionella pneumophila bacteria legionnaires infection disease pathogen pneumonia outbreak transmission contamination prevention control testing monitoring regulations guidelines remediation management cooling towers water systems air conditioning heaters plumbing biofilm colonization sampling culture detection diagnostics serogroups virulence epidemiology symptoms treatment antibiotics public health surveillance risk assessment quality awareness education pneumophilia causing legionnaires' medically generative gram-negative bacterium responsible severe form pneumonia thrives aquatic environments contaminating transmitted humans inhalation aerosolized droplets leading respiratory infections