“…Thirteen occupational studies measured personal exposure of compost workers to different bioaerosol components (Bünger et al, 2007;Crook et al, 2008;Drew et al, 2007;Douwes et al, 1997;Epstein et al, 2001;Krajewski et al, 2002;Schlosser et al, 2009;Sigsgaard et al, 1994;Stagg et al, 2010;Sykes et al, 2011;Taha et al, 2007;Wheeler et al, 2001), detecting significantly high concentrations of actinomycetes, Aspergillus fumigatus, fungi, and endotoxin (Stagg et al, 2010), and elevated personal exposure levels of endotoxin in workers, particularly during composting agitation activities (Sykes et al, 2011). Four occupational studies measured mesophilic mould/fungi (Reinthaler et al, 2004;Schlosser et al, 2009;Tolvanen et al, 2005;van Kampen et al, 2014).…”