<unk>  is a species of bacteria responsible for Lemierre's syndrome and other medical problems.
Fusobacterium necrophorum
Bacteroides caccae
Corynebacterium pseudotuberculosis
Staphylococcus saprophyticus
Pseudomonas aeruginosa
Staphylococcus aureus
Bacillus anthracis
Neisseria flavescens