Anyone have information related with air stream treatment with UV systems to control bacteria and Virus in closed hospital rooms with air recirculation? Thanks a lot -- Ingeniero Alfonso Manrique Vega Depto. Procesos Quimicos y Biologicos Facultad de Ingenieria - Universidad del Valle Cali , Colombia . A.A 25360 Fax: (+572) 339 2335 e-mail almanriq@mafalda.univalle.edu.co http://sunsite.univalle.edu.co