Appendix B . 
2. Fungal A gents. 
A ctinomycetes are bacteria, not fungi, and include 
numerous genera and an extraordinary number of species, the 
vast majority of which are non-pa thogeni c (for reference, 
consult any standard microbiology text and ref. l). For 
instance Bergies Manual of Determinative Bacteriology (l) 
describes 4l6 species and 47 subspecies of Streptomyces , 
while only four species are considered human pathogens (2). 
To avoid inadvertent classification of harmless Streptomyces 
and other harmless A ctinomycetes of therapeutic and economic 
importance as Class 2 Agents, we suggest that only the patho- 
genic A ct i nomycet es be listed as Class 2 3acterial Agents. 
Below is a summary of pathogenic A ct inomyc et es listed in 
ref. 2, 3, and 4: 
A ct inomyces 
erixsonii 
Dermatophilus congolensis 
Act inomyce s 
israelii 
Nocardia asteroides 
A ctir.omyces 
bovis (bovine 
pathogen) 
Nocardia brasiliensis 
A ctinorayces 
naeslundii 
Nocardia ca via e 
A ctinomyces 
odontolyt i cus 
Streptomyces niadurae 
A ctinomyces 
suis ( swine 
pathogen) 
Streptomyces pelletierii 
A ctinomyces 
viscosus 
Streptomyces paraguayensis 
Arachnia propionica 
Streptomyces somaliensis 
[Appendix A — 44] 
