Bacterial:
(1) Group A beta hemolytic streptococci
(2) non Group A beta hemolytic streptococci (C, G, other)
(3) Neisseria gonorrhoeae
(4) Corynebacterium diphtheriae
(5) Arcanobacterium haemolyticum
(6) Yersinia enterocolitica
(7) Yersinia pestis
(8) Francisella tularensis
Viral:
(1) rhinovirus
(2) coronavirus
(3) adenovirus
(4) Herpes simplex virus
(5) parainfluenza virus
(6) influenza virus
(7) coxsackie A virus
(8) Epstein-Barr virus
(9) cytomegalovirus (CMV)
(10) HIV (during primary infection)
(11) respiratory syncytial virus
Other:
(1) Chlamydia psittaci or pneumoniae
(2) Mycoplasma pneumoniae
