Changes

*Venereal infection of cattle

*Infertility in female cattle

 

*Found in glandular crypts of prepuce of bull with no clinical signs - carriers

''Campylobacter fetus'', has the subspecies ''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.

*Causes catarrhal inflammation in female genital tract

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 infection cleared and causes early embryonic death, occasionally sporadic abortion

*Endometritis prevents implantation until infection cleared and causes early embryonic death, occasionally sporadic abortion

*May remain infertile for 3-5 months before immunity develops, which lasts 4-5 years

*May remain infertile for 3-5 months before immunity develops, which lasts 4-5 years

*Effective immunity includes induction of [[IgA]] in the vagina and [[IgG]] in the uterus

*Effective immunity includes induction of [[IgA]] in the vagina and [[IgG]] in the uterus