Streptococcus pyogenes
A number of different bacteria can infect the human throat. The most common is group A streptococcus ("Streptococcus pyogenes"), but others include "Streptococcus pneumoniae", "Haemophilus influenzae", "Bordetella pertussis", "Bacillus anthracis", "Corynebacterium diphtheriae", "Neisseria gonorrhoeae", "Chlamydophila pneumoniae", "Mycoplasma pneumoniae," and "Fusobacterium necrophorum".