Trachea no. Antibiotic regimen Post-recovery tissue or solution culture Post-antibiotic incubation tissue or solution culture 1 Penicillin and streptomycin Candida guilliermondii, Pichia ohmeri Candida guilliermondii, Pichia ohmeri 2 Penicillin and streptomycin Negative Cladosporium sp. 3 Amikacin, vancomycin and caspofungin Klebsiella sp., Acinobacter bauminii Klebsiella sp. 4 Amikacin, vancomycin and caspofungin Coagulase-negative Staphylococcus, Propionibacterium acnes Negative

Table 2: Type of micro-organisms isolated from tracheal allografts recovered by National Cardiovascular Homograft Bank (NCHB).