Figure 1.
Overview of selected key events in the history of UVGI air disinfection
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qPersonal communication, Edward Nardell, Harvard School of Public Health, October 2008
UVGI = ultraviolet germicidal irradiation
nm = nanometer
Hg = mercury
TB = tuberculosis
BCG = Bacillus Calmette-Guérin
HIV = human immunodeficiency virus