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[[File:campylo.jpg|thumb|200px|right|''Campylobacter fetus'' Janice Carr 2004, wikimedia commons]]

[[File:campylo.jpg|thumb|200px|right|''Campylobacter fetus'' Janice Carr 2004, wikimedia commons]]

''Campylobacter fetus'', has the subspecies [[Campylobacter fetus subspecies fetus|''fetus'']] and ''venerealis'', belonging to the genus [[Campylobacter species- Overview|''Campylobacter'']]. ''Campylobacter fetus subsp. venerealis'' causes venereal infection in cattle and infertility in female cattle.

''Campylobacter fetus'', has the subspecies [[Campylobacter fetus subspecies fetus|''fetus'']] and ''venerealis'', belonging to the genus [[Campylobacter species - Overview|''Campylobacter'']]. ''Campylobacter fetus subsp. venerealis'' causes venereal infection in cattle and infertility in female cattle.

The bacteria is found in glandular crypts of prepuce of bull with no clinical signs. Bulls are therefore known as carriers. It causes catarrhal inflammation in the female genital tract. [[Endometritis - Bovine|Endometritis]] prevents implantation until the infection is cleared and causes early embryonic death and occasionally sporadic abortion.

The bacteria is found in glandular crypts of prepuce of bull with no clinical signs. Bulls are therefore known as carriers. It causes catarrhal inflammation in the female genital tract. [[Endometritis - Bovine|Endometritis]] prevents implantation until the infection is cleared and causes early embryonic death and occasionally sporadic abortion.

The cow may remain infertile for 3-5 months before immunity develops, which then lasts 4-5 years. Effective immunity includes induction of [[IgA]] in the vagina and [[IgG]] in the uterus.

The cow may remain infertile for 3-5 months before immunity develops, which then lasts 4-5 years. Effective immunity includes induction of [[IgA]] in the vagina and [[IgG]] in the uterus.