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''Chlamydophila abortus'' is a species in Chlamydiae that causes abortion and fetal death in mammals, including humans. ''Chlamydophila abortus'' was previously classified as ''Chlamydia psittaci'' along with all Chlamydiae except ''Chlamydia trachomatis''. This was based on a lack of evident glycogen production and on resistance to the antibiotic sulfadiazine. In 1999 ''C. psittaci'' and ''C. abortus'' were recognized as distinct species based on differences of pathogenicity and DNA-DNA hybridization.〔 〕 ''C. abortus'' is endemic among ruminants and has been associated with abortion in a horse, a rabbit, guinea pigs, mice, pigs and humans. Infected females shed bacteria near the time of ovulation, so ''C. abortus'' is transmitted orally and sexually among mammals. All ''C. abortus'' strains were isolated or PCR-amplified from placenta or fetal organs after spontaneous abortion. ''C. abortus'' infection generally remains inapparent until an animal aborts late in gestation or gives birth to a weak or dead foetus. ''C. abortus'' has not been isolated from birds. ==Genome structure== ''C. abortus'' has a relativelly small genome that contains 1.14 Mbp with 961 protein coding genes. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Chlamydophila abortus」の詳細全文を読む スポンサード リンク
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