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Volume 13, Number 1—January 2007


Cryptococcus gattii Dispersal Mechanisms, British Columbia, Canada

Sarah E. Kidd*, Paxton J. Bach*, Adrian O. Hingston*, Sunny Mak†, Yat Chow*, Laura MacDougall†, James W. Kronstad*, and Karen H. Bartlett*Comments to Author 
Author affiliations: *University of British Columbia, Vancouver, British Columbia, Canada; †British Columbia Centre for Disease Control, Vancouver, British Columbia, Canada;

Main Article

Table 2

Airborne Cryptococcus gattii concentration before and during contracted tree-cutting activities

Tree-cutting activitySampling methodC. gattii concentration in air (CFU/m3)
Red alderDouglas fir
Air; Andersen 6-stage*3812,073
Limb removalAir; Andersen 6-stage5,707940
Air; Andersen 6-stage3,6221,279
FellingAir; RCS-Plus,† 12–15 m above ground906294
Air; RCS-Plus, 12–15 m above ground881213
Cutting limbsAir; RCS-Plus, 6 m above ground7501,719
Air; RCS-Plus, 6 m above ground2,968
Cutting tree trunkAir; RCS-Plus, 0–3 m above ground21,250225
Wood chippingAir; RCS-Plus53,12521,250

*Limit of detection of method: 6 CFU/m3.
†RCS, Reuter centrifugal sampler; limit of detection of method: 5 CFU/m3.

Main Article