MY ACCOUNT | NEWSLETTER |

Molecular prevalence of Anaplasma marginale in beef cattle herds


The objectives of the study were: to estimate the prevalence of Anaplasma marginale — the causative agent of bovine anaplasmosis — in beef herds from Ohio; evaluate farm identity and animal age as risk factors and examine serologic cross-reactivity with Anaplasma phagocytophilum, an emerging disease agent.

To address the broader investigation of characterizing Anaplasma spp and genotypes in Ohio, herds with a history of clinical anaplasmosis were targeted. Blood was screened for antibodies to Anaplasma spp using a competitive enzyme-linked immunosorbent assay with seropositive samples tested for A marginale using real-time PCR. If negative, samples were also tested for A phagocytophilum.

Overall, four beef cattle herds (n = 327) were sampled between December 2020 and December 2021.

The authors estimated a statewide molecular prevalence of 38.53% (95% CI, 33.26% to 43.81%), with some farms exhibiting higher prevalence than others (19.40% to 56.86%). Accounting for farm identity, the odds of an animal becoming infected increased by 1.41 (95% CI, 1.28 to 1.58) for every year in age. Forty-four animals tested seropositive but PCR negative for A marginale. Out of these, two animals tested positive for A phagocytophilum.

The authors confirm that this was the first paper to report prevalence estimates for bovine anaplasmosis in Ohio. Although prevalence was higher than other states, this is most likely due to sampling approach.

The results suggested that older animals are more likely to be infected with A marginale, and when animals are instead infected with A phagocytophilum, serology alone can be misleading wherever the 2 species co-occur. In conclusion, this study can guide wider epidemiological studies for informing cattle management in Ohio.

Andreas Eleftheriou, DaZané Cole, Justin Kieffer and Risa Pesapane. “Molecular prevalence of Anaplasma marginale and associated risk factors in beef cattle herds from Ohio: a cross-sectional study.” J Am Vet Med Assoc. 2022 Sep 1;1-5. doi: 10.2460/javma.22.05.0204.

Like0
Dislike0
  • Please enter a comment


Name *
Email address *
Comment *


* Required fields

Information on the processing of your personal data
We inform you that, in compliance with the provisions of current national and European regulations for the Protection of Personal Data and Services of the Information Society and Electronic Commerce, by sending us this form you are expressly giving your consent to Grupo Asís Biomedia , SL, (hereinafter, "ASIS GROUP") so that, as the person in charge, it may process your personal data in order to respond to your request for contact and information by electronic means.

Likewise, when you expressly consent, we will process your personal data to send you specialized information, newsletters, offers and exclusive promotions from GRUPO ASIS and related companies.

For the aforementioned purpose, GRUPO ASIS may transfer your data to other companies linked to GRUPO ASIS or to third party service providers for the management of electronic communications and other security services, even in cases where they are outside of the European Union, provided that they legally guarantee the adequate level of protection required by European regulations.

At any time you can withdraw the consent given and exercise the rights of access, rectification, deletion, portability of your data and limitation or opposition to its treatment by contacting GRUPO ASIS by sending an email to protecciondatos @ grupoasis.com, or by written communication to address at Centro Empresarial El Trovador, 8th floor, office I, Plaza Antonio Beltrán Martínez 1, 50002, Zaragoza (Spain), indicating in either case the Ref. Personal data and the right you exercise, as well as attaching a copy of your ID or replacement identification document.


I have read and accept the treatment of my data according to the informed purpose and according Legal notes and the Privacy Policy
I wish to receive commercial information from GRUPO ASIS and related companies



More news

Sploot opens second clinic in Denver, with more on the way

Like0
Dislike0

Dr. Christopher Byers: The pandemic broke me

Like0
Dislike0

Disaster preparedness for animals

Like0
Dislike0

Echocardiographic indicators of fluid responsiveness in hospitalized dogs with compromised hemodynamics, tissue hypoperfusion

Like0
Dislike0

Morris Animal Foundation accepting RFPs to use golden retriever study data, samples

Like0
Dislike0

Newsletter

 
 

News of interest

EVENTS

Copyright © 2022 - All Rights Reserved
ISSN 2768-198X

Top