Among the bacteria that have been detected, the most
commonly reported microorganisms are the Gram-negative α-, β-
and γ-proteobacteria (Pseudomonas spp. and Vibrio spp.) and the
Cytophaga–Flavobacterium–Bacteriodes phylum. Coryneforms,
Arthrobacter sp. and Micrococcus sp. are the most frequently found
Gram-positive bacteria