Author: Nazaroff, William W
Title: Indoor bioaerosol dynamics Document date: 2014_12_27
ID: 6cargkwy_16
Snippet: Measurement of airborne viruses in indoor environments has lagged behind measurement of bacteria and fungi. The recent development of quantitative polymerase chain reaction (qPCR) and other DNAbased measurement technologies has facilitated studies that measure pathogenic viruses in indoor air. Data from one study targeting the influenza A virus are presented in Figure 5 . During the flu season, sizeresolved particle samples were collected on filt.....
Document: Measurement of airborne viruses in indoor environments has lagged behind measurement of bacteria and fungi. The recent development of quantitative polymerase chain reaction (qPCR) and other DNAbased measurement technologies has facilitated studies that measure pathogenic viruses in indoor air. Data from one study targeting the influenza A virus are presented in Figure 5 . During the flu season, sizeresolved particle samples were collected on filters in three different environment types: a day care center, a health center, and (three) airplanes. In all, 16 samples were collected by means of sampling at a rate of 9 l/min for periods of 6-8 h. Eight of these samples (50%) contained influenza A virus, with concentrations ranging from 5800 to 37 000 genomes per m 3 , and a substantial proportion of the detected virus was associated with fine particles (< 2.5 lm) that can remain airborne for extended periods and that can also penetrate and deposit deeply in the respiratory tract when inhaled.
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