Publications by authors named "J Ron-Roman"
Bayesian Estimation of the True Bovine Brucellosis Prevalence in Vaccinated and Non-Vaccinated Ecuadorian Cattle Populations, and the Sensitivity and Specificity of a Competitive and Indirect ELISA Using a New Synthetic Antigen.
Ana Dolores Garrido Haro Margoth Yolanda Barrionuevo Samaniego Paola Moreno-Caballeros Alexandra Burbano-Enríquez Verónica Alexandra Salas Torres
Microorganisms
January 2025
Bovine brucellosis (bB) is a zoonosis mainly caused by the species in cattle. Bovine brucellosis can present with either a range of clinical symptoms, including spontaneous abortions in the last trimester of pregnancy, retained fetal membranes, and decreased milk production, or it can be asymptomatic. In Ecuador, vaccination against bB with S19 and/or RB51 is not mandatory and is the responsibility of the farmer.
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- Bovine trypanosomoses is a disease caused by protozoan parasites affecting cattle, leading to fever and anemia, primarily impacting dairy and meat production in parts of Africa and South America.
- A study conducted in the Galapagos Islands analyzed 170 blood samples from 19 farms on Santa Cruz Island, utilizing various PCR techniques to detect different blood parasites, revealing prevalence rates for several parasites.
- The findings indicated that 26.3% of farms had multiple blood parasites, and cattle with co-infections had higher body temperatures, marking the first detection of certain parasites in Galapagos cattle and contributing valuable insights to veterinary medicine.
Article Synopsis
- * A study conducted in Ecuador's 23 provinces assessed 3737 cows for bovine brucellosis using a competitive ELISA test, revealing a herd-level prevalence of 21.3% and animal-level prevalence of 6.2%.
- * Key risk factors identified include herds larger than 70 hectares and multiple parturitions, while protective factors include farms in the eastern region and lack of clinical signs, guiding future management and control strategies for bovine brucellosis in the country.*
Article Synopsis
- The study investigates the presence of a haemoparasite affecting bovines in Ecuador, highlighting its distribution and potential health impacts.
- The research involved collecting and analyzing 218 blood samples from two slaughterhouses in Quito and Santo Domingo, uncovering a 15.6% positivity rate for the parasite.
- Phylogenetic analysis revealed two novel isolates closely related to other genotypes found in neighboring countries, with a high rate of co-infection with other pathogens potentially exacerbating health issues in the cattle.
Disease prevention, including biosecurity, surveillance, and traceability are key aspects to minimize the risk of animal diseases causing harm to society. Diseases for which biosecurity are needed depend on species of interest, e.g.
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