Bacteroidetes

The phylum Bacteroidetes is composed of three large classes of Gram-negative, nonsporeforming, anaerobic or aerobic, and rod-shaped bacteria that are widely distributed in the environment, including in soil, sediments, and sea water, as well as in the guts and on the skin of animals. Members of the genus Bacteroides are opportunistic pathogens. Rarely are members of the other two classes pathogenic to humans.

Bacteroidetes

The phylum Bacteroidetes is composed of three large classes of Gram-negative, nonsporeforming, anaerobic or aerobic, and rod-shaped bacteria that are widely distributed in the environment, including in soil, sediments, and sea water, as well as in the guts and on the skin of animals. Members of the genus Bacteroides are opportunistic pathogens. Rarely are members of the other two classes pathogenic to humans.