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Capitalizing names of organisms (genus and species)

Always capitalize the genus name and the abbreviated form of the genus name when it is accompanied by a species name.

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Haemophilus influenzae, H. influenzae
Staphylococcus aureus, S. aureus
Escherichia coli, E. coli

NOTE: This differs from the AMA Manual of Style, which specifies that the formal name of a genus is capitalized when used in the singular, with or without a species name.

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Staphylococcus
Escherichia

Do not capitalize the genus name when it is used in plural and adjectival forms, or when used in the vernacular or when it stands alone without a species name. (See exception note above.)

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staphylococcus
escherichia
staphylococci (plural)
staphylococcal (adjectival)
strep (vernacular)

The suffixes -osis and -iasis indicate disease caused by a particular class of infectious agents or types of infection. These are common nouns and are not capitalized.

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candidiasis
dermatophytosis

Do not capitalize the name of a species, variety or subspecies of organism.

Do capitalize phylum, class order or family.

 


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Page last modified on Tuesday 13 of September, 2011 20:38:59 UTC by admin.
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