Some measures cost nothing and should be implemented out of good sense. Expensive measures could be a waste of money for healthy nonsmoking adults, who are at low risk of contracting Legionaires disease. High-risk individuals, however, should consider taking every reasonable precaution. For more information on avoiding exposure to legionellae in public places, see our electronic publication entitled How to reduce your risk of Legionnaires disease in public places . For information on reducing your exposure to legionellae at home, see our publications for homes .
Full masks allow less leakage and thus filter more than half masks.
A good fit is critical with any mask. Be aware, however, that HEPA filters will not block all bacteria. Gloves, goggles, and other body coverings have also been suggested for cooling tower work. Your question will either be answered by Freije or forwarded to one of about 15 experts who have volunteered to donate time for this free service. If you prefer, for confidentiality, to have only Freije review your question, please state so in your e-mail message.