abortion rate

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a·bor·tion rate

1. the number of induced abortions per 1000 pregnancies that resulted in a live birth, stillbirth, or induced termination.
2. the number of terminations ×1000 ÷ the female population ages of between 15 and 44 years.


premature expulsion from the uterus of the products of conception; termination of pregnancy before the fetus is viable.

complete abortion
complete expulsion of all the products of conception.
early abortion
abortion within the first third of pregnancy.
epizootic bovine abortion
characterized by serious fetal disease followed by abortion. Endemic in California's coastal range and in the foothill region of the Sierra Nevada, USA. Necropsy findings in the fetus are diagnostic; they include profuse petechiation and severe granulomatous hepatitis. Cause appears to be a novel deltaproteobacterium closely related to members of the order Myxococcales. Transmitted by the tick, Ornithodoros coriaceus. Called also foothill abortion.
habitual abortion
spontaneous abortion occurring in three or more successive pregnancies.
incomplete abortion
abortion in which parts of the products of conception are retained in the uterus.
induced abortion
abortion procured by the veterinarian to eliminate a misalliance, to reduce wastage in animals in a feedlot, to encourage commencement of lactation earlier than would otherwise occur. In cattle manipulation through the rectal wall is a possible way of destroying the viability of the fetus. Induction by the administration of prostaglandins or corticosteroids is more usual. See also pregnancy termination.
infectious abortion
the common causes in the various species are:
Brucella abortus (brucellosis); Campylobacter fetus subsp. venerealis (vibriosis); Campylobacter fetus subsp. fetus; Leptospira pomona, L. hardjo (leptospirosis); Listeria monocytogenes (listeriosis); Arcanobacterium pyogenes; Aspergillus, Absidia and Mucor spp. (fungal abortion); bovine virus diarrhea virus; infectious bovine rhinotracheitis herpesvirus; Chlamydophila abortus; a deltaproteobacterium (epizootic bovine abortion); Coxiella burnetii (Q fever), Neospora caninum.
sheep and goats
Campylobacter fetus subsp. fetus (vibriosis); Campylobacter jejuni; Chlamydophila abortus (enzootic abortion of ewes); Listeria monocytogenes (listeriosis); Salmonella abortus-ovis; Brucella melitensis; Toxoplasma gondii (toxoplasmosis); Brucella ovis (limited occurrence); bluetongue virus; border disease.
Streptococcus equi subsp zooepidemicus; Actinobacillus equuli, A. equisimilis; Rhodococcus equi; leptospirosis, most commonly the pomona serogroup and less frequently serovar grippotyphosa; equine herpesvirus (EHV1); equine viral arteritis (EVA); equine arteritis; Potomac horse fever; and in the USA the mare reproductive loss syndrome associated with ingestion of the Eastern tent caterpillar Malacosoma americanum.
Leptospira pomona, L. grippotyphosa, L. canicola, L. icterohaemorrhagiae (leptospirosis); Erysipelothrix rhusiopathiae (erysipelas); porcine reproductive respiratory syndrome (PRRS) virus; parvovirus; porcine circovirus 2; Aujesky's disease; classical swine fever; and African swine fever.
dog and cat
Brucella canis, feline leukemia virus, feline herpesvirus.
missed abortion
retention of a dead embryo or fetus for more than 1 to 2 weeks.
pine needle abortion
a late-term abortion with retained fetal membranes in cattle caused by ingestion of isocupressic acid in the needles of Pinus spp., commonly P. ponderosa, but also P. jeffryi, P. contorta and Juniperus scopulorum and J. communis. Nutrient deficiency and tree management practices may promote ingestion off the ground as cattle graze through while eating early growing spring grass.
abortion rate
number of abortions as a percentage of the cows in the herd which were diagnosed pregnant in early pregnancy; the target is <2% but="" rates="" commonly="" approach="" 8%="" in="" dairy="" cattle="" and="" 5%="" in="" beef="">
septic abortion
abortion associated with serious infection of the uterus leading to generalized infection.
spontaneous abortion
abortion occurring naturally. See also spontaneous abortion.
abortion storm
a cluster of abortions occurring at about the same time or in rapid sequence within a group of pregnant females. See also equine viral abortion.
therapeutic abortion
abortion induced by a veterinarian for medical or other health reasons.
References in periodicals archive ?
Beginning with the 2007 abortion statistics, CIHI has provided documentation of the total number of abortions but the abortion rate per 1,000 is not provided.
While abortion rates in the developing world vary widely, unsafe abortion procedures and conditions are pervasive, since most abortions in these regions are clandestine.
Linear regression analyses were used to estimate the changes in the annual abortion rate and in the rate of second-trimester abortions among minors and older teenagers associated with the shift from a parental notification to a consent statute.
study to examine the long- and short-term effects of public policy on abortion rates has been released by Catholics in Alliance for the Common Good, Washington, D.
While the cause of the declining abortion rate in the United States may not be clear, there is ample evidence worldwide that restricting access does not reduce the need for abortions; nor do restrictions lessen the number of abortions performed.
Abortion rates fell most significantly in Eastern Europe, a trend that corresponds with substantially increased contraceptive use in the region, according to "Induced Abortion: The Global Reality and Avoidable Risks, a new report by the Guttmacher Institute and the World Health Organization (WHO) published in the 13 October 2007 issue of The Lancet.
But the teenage abortion rate in Torfaen rose to 24 per 1,000 girls last year, compared to 19 per 1,000 in 2005.
The abortion rate has also dropped, according to some estimates.
The policy is designed to makes easier for sexually active girls to access birth control, in the hope that doing so will reduce the abortion rate in the province.
Teenagers from disadvantaged areas had the highest conception rate but also the lowest abortion rate.
To receive the bonuses, the top states also were required to show a decrease in their abortion rate between the most recent year and 1995.
st] is alternatively abortion rate or birth rate per 1000 for 15-19-year-old women in a particular state and year.