Vampire Bat Control by Systemic Treatment of Livestock with an Anticoagulant

Thompson, Ryan; Mitchell, G. Clay; Burns, Richard J.

doi:10.1126/science.177.4051.806

Cited by 59 publications

(30 citation statements)

References 2 publications

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“…According to unofficial information obtained from the Brazilian Ministry of Agriculture, it is estimated that nearly 30,000 bovines are lost each year in Brazil. In order to minimize the important economic losses, one of the methods for controlling the disease consists of exterminating vampire bat colonies with anticoagulants 7,13,19 .…”

Section: Introductionmentioning

confidence: 99%

Antibody response in cattle after vaccination with inactivated and attenuated rabies vaccines

Silva¹,

Caporale²,

Gonçalves³

et al. 2000

Rev. Inst. Med. trop. S. Paulo

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SUMMARYDespite the absence of current official reports showing the number of cattle infected by rabies, it is estimated that nearly 30,000 bovines are lost each year in Brazil. In order to minimize the important economic losses, control of the disease is achieved by eliminating bat colonies and by herd vaccination. In this study, we compare the antibody response in cattle elicited by vaccination with an attenuated ERA vaccine (AEvac) and an inactivated-adjuvanted PV (IPVvac) vaccine. The antibody titers were appraised by cell-culture neutralization test and ELISA, and the percentage of seropositivity was ascertained for a period of 180 days. IPVvac elicited complete seropositivity rates from day 30 to day 150, and even on day 180, 87% of the sera showed virus-neutralizing antibody titers (VNA) higher than 0.5IU/ml. There were no significant differences between the VNA titers and seropositivity rates obtained with IPVvac in the two methods tested. AEvac, however, elicited significantly lower titers than those observed in the group receiving inactivated vaccine. In addition, the profiles of antirabies IgG antibodies, evaluated by ELISA, and VNA, appraised by cellculture neutralization test, were slightly different, when both vaccines were compared.

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Section: Introductionmentioning

confidence: 99%

Antibody response in cattle after vaccination with inactivated and attenuated rabies vaccines

Silva¹,

Caporale²,

Gonçalves³

et al. 2000

Rev. Inst. Med. trop. S. Paulo

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“…Besides obvious economical costs, this high rabies incidence also increases the risk of rabies transmission to other animals (1). Extermination of vampire bat colonies with anticoagulants has been used to control rabies dissemination to cattle (8,16). However, vaccination of bovine herds has been the most effective strategy to control the disease in bovines.…”

Section: Introductionmentioning

confidence: 99%

Interval between first dose and booster affected antibody production in cattle vaccinated against rabies

Albas

Fontolan

Pardo

et al. 2006

J. Venom. Anim. Toxins incl. Trop. Dis

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ABSTRACT:In this study, we compared the levels of neutralizing antibodies induced by inactivated rabies vaccine in cattle by using three alternative immunization procedures. Forty-five bovines (breed nelore) were then organized in three groups (A, B and C, with 15 animals/group). Group A received only one vaccine dose at day zero and Group B received the first dose at day zero and then another dose at day 30 (early booster). Group C was also immunized with two doses; however, the booster was postponed until day 180 after the first dose (delayed booster). Blood samples were withdrawn at days zero (before the first dose) and 30, 210, 390, and 540 after the beginning of immunization and the antibody titers were evaluated by mouse neutralization test. The protocol used to immunize Group C (booster at day 180) was clearly more efficient. In this group, antibody levels were higher and also remained higher for longer periods in comparison with the other two groups. These results show that booster timing significantly affected antibody levels. Therefore, programs addressed to control this disease in cattle should consider not only the use of a booster but also its administration time.

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“…Dados semelhantes foram, também, observados por Thompson et al (1972). O controle seletivo direto de D. rotundus utilizando a pasta a base de warfarina 2% foi realizado em 190 (85%) capturas.…”

Section: Methodsunclassified

Captura de Desmodus rotundus em regiões de mata e manguezais do Estado do Maranhão: um estudo longitudinal

et al. 2013

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Pesq. Vet. Bras. 33(5):571-574, maio 2013 571 RESUMO.-O presente trabalho teve por objetivos investigar o número de capturas e o controle do morcego hematófago Desmodus rotundus, em pequenas propriedades localizadas no município de Cedral no estado do Maranhão, que foi escolhido por ter sido efetuado o maior número de capturas do estado, sendo todas ao redor de currais. O controle oficial é realizado pela aplicação de pasta vampiricida de uso tópico a base de warfarina a 2%. Para o estudo foram utilizadas fichas de controle de morcegos hemató-fagos capturados em currais, como também, foi aplicado um questionário a campo para identificação dos locais com maior número de capturas. The aim of the study was to investigate the number of captures and the control of the common vampire bat Desmodus rotundus on small farms in the municipality of Cedral, State of Maranhão, Brazil. The area was chosen because the highest number of captures in Maranhão was made there around corrals. Official control is accomplished by applying warfarin 2%, a vampiricid gel, on captured bats. In this study, control records of captured hematophagous bats were analyzed, and a questionnaire was applied in the field to identify areas with the highest number of captures. From 2005 to 2010, 223 captures in 101 farms were studied; in 190 of them existed control with application of warfarin 2% gel on the bats.. There was a total of 344 attacked livestock out of 754 exposed animals, mostly cattle (49%), followed by horses (18%), poultry (15%), pigs (9%) and goats (8%). After 6 years, the proportion of captured male and female bats was 1.08 to 1.00, compared to 1.00 to 1.21 in the first year, what demonstrates that the treatment was more effective in females. Within three years, there was control in the number of bats in 95% of the farms, after 1 to 6 captures. The main attacked area of the animal bodies was the neck. Only 57% of the owners vaccinated their livestock. The present study concluded that (1) the control with capture of bats in corrals was effective, (2) but it is prudent to monitor the area during the first 3 months after the end of control, (3) the number of captured bats was similar to the number of recent bites, and (4) D. rotundus could attack any domestic animal, with little predilection for poultry.

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Vampire Bat Control by Systemic Treatment of Livestock with an Anticoagulant

Cited by 59 publications

References 2 publications

Antibody response in cattle after vaccination with inactivated and attenuated rabies vaccines

Antibody response in cattle after vaccination with inactivated and attenuated rabies vaccines

Interval between first dose and booster affected antibody production in cattle vaccinated against rabies

Captura de Desmodus rotundus em regiões de mata e manguezais do Estado do Maranhão: um estudo longitudinal

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