Streptococcus orisratti is a species of oral Streptococcus bacteria first isolated from Sprague–Dawley rats, hence its name. Its type strain is A63T (=ATCC 700640T).[1]
Hill, Janet E.; Gottschalk, Marcelo; Brousseau, Roland; Harel, Josée; Hemmingsen, Sean M.; Goh, Swee Han (2005). "Biochemical analysis, cpn60 and 16S rDNA sequence data indicate that Streptococcus suis serotypes 32 and 34, isolated from pigs, are Streptococcus orisratti". Veterinary Microbiology. 107 (1–2): 63–69. doi:10.1016/j.vetmic.2005.01.003. ISSN0378-1135. PMID15795078.