Characterization of intestinal Escherichia coli isolated from calves with diarrhea due to rotavirus and coronavirus.

CONCLUSION: To sum up, E. coli isolates from calves with diarrhea showed differences in relation to the control group, confirming changes in commensal E. coli during virus intestinal infection. It can be emphasized that some care should be taken to manage diarrheic calves: the pathological agent must be diagnosed prior to treatment; antibacterial treatment should be with antimicrobials with a different mechanism of action; and finally, treated animals should be maintained separately from others because they can carry micro-organisms with a resistant profile. PMID: 30720419 [PubMed - as supplied by publisher]
Source: Journal of Medical Microbiology - Category: Microbiology Authors: Tags: J Med Microbiol Source Type: research

Related Links:

In conclusion, we demonstrated that the selective boosting of lung innate immunity is a conceptually advantageous approach for improving the effectiveness of antibiotic treatment and fighting antibiotic-resistant bacteria. Introduction Pneumonia constitutes a major cause of death, morbidity and health resource use worldwide. The main causative agents identified in adult patients hospitalized for community-acquired pneumonia (CAP) are viruses (in 27–30% of cases, the most common being rhinovirus, influenza and coronavirus) and bacteria (14–23% of cases, with a marked predominance of Streptococcus pneumonia...
Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research
This study reports development and initial validation of two independent highly sensitive and specific multiplex PCR-electronic microarray assays, one for the detection and differentiation of pathogens of the BRDC and the other for detection and differentiation of pathogens of the BED. The BRDC multiplex PCR-microarray assay was able to detect and differentiate four bacteria (Mannheimia haemolytica, Histophilus somni, Pasteurella multocida, and Mycoplasma bovis) and five viruses (bovine parainfluenza virus-3, bovine respiratory syncytial virus, bovine herpesevirus-1, bovine coronavirus, and bovine viral diarrhea virus) ass...
Source: Journal of Virological Methods - Category: Virology Authors: Tags: J Virol Methods Source Type: research
Abstract A novel swine acute diarrhea syndrome Coronavirus (SADS-CoV) that causes severe diarrhea in suckling piglets was identified in southern China in 2017. A simple and rapid detection test was developed for this virus using real-time RT-LAMP based on the conserved N gene of the virus. The method had a detection limit of 1.0 × 101 copies/µL with no cross-reactions with classical swine fever virus, porcine and respiratory syndrome virus NA, porcine and respiratory syndrome virus EU, transmissible gastroenteritis coronavirus, foot and mouth disease virus, porcine epidemic diarrhea virus (S-INDEL ...
Source: Journal of Virological Methods - Category: Virology Authors: Tags: J Virol Methods Source Type: research
In this study, the PI level influenced the occurrence of enteric diseases and mortality in calves under one month of age, confirming the importance of a proper colostrum provision to calf health and, consequently, to the reduction of antimicrobial use in dairy farming. However, further investigations are needed, particularly focusing on the relationship between PI and specific enteropathogen infections in calves.
Source: Preventive Veterinary Medicine - Category: Veterinary Research Source Type: research
In this study, the PI level influenced the occurrence of enteric diseases and mortality in calves under one month of age, confirming the importance of a proper colostrum provision to calf health and consequently to the reduction of antimicrobial use in dairy farming. However, further investigations are needed, particularly focusing on the relationship between PI and specific enteropathogen infections in calves.
Source: Preventive Veterinary Medicine - Category: Veterinary Research Source Type: research
AbstractAichivirus B has been reported worldwide in calves and adult cattle with and without diarrhea. The aim of this study was to describe the molecular characteristics of the RdRP and  VP1 genes of aichivirus B strains identified as the most frequent etiologic agent in a neonatal diarrhea outbreak in a high-production Brazilian dairy cattle herd. Preliminary laboratory analysis ruled out important enteropathogens (Cryptosporidium spp;Eimeria spp.,E. coli F5, and bovine coronavirus). Fecal samples from diarrheic (n = 24) and asymptomatic (n = 5) calves up to 30 days old were collected for virological analysis. RT-PC...
Source: Archives of Virology - Category: Virology Source Type: research
In this study, a recombinant M protein-based indirect enzyme-linked immunosorbent assay (PDCoV-rM ELISA) was developed and utilized to determine the prevalence of anti-PDCoV IgG in Hebei province. The PDCoV-rM ELISA showed no cross-reaction with antisera against transmissible gastroenteritis virus (TGEV), porcine epidemic diarrhea virus (PEDV), porcine rotavirus (PRV), porcine circovirus 2 (PCV2), classical swine fever virus (CSFV) or porcine reproductive and respiratory syndrome virus (PRRSV). The diagnostic sensitivity was 90.6% and the diagnostic specificity was 93.3%. A total of 871 serum samples collected in Hebei fro...
Source: Journal of Virological Methods - Category: Virology Authors: Tags: J Virol Methods Source Type: research
Summary Porcine deltacoronavirus (PDCoV) is a newly discovered coronavirus that causes diarrhoea, vomiting and dehydration in sucking and nursing piglets. It was first reported in Hong Kong in 2012 and has since been discovered in the United States, Canada, South Korea, mainland China, Thailand and Laos. PDCoV has been experimentally proved to lead to diarrhoea in swine and it was detected positive in pigs in Guangdong, southern China. In our study, 252 faecal and intestinal samples from sucking piglets and sows with diarrhoea were surveyed for common enteric viruses. We found a prevalence of PDCoV (21.8%), porcine epidemi...
Source: Transboundary and Emerging Diseases - Category: Veterinary Research Authors: Tags: ORIGINAL ARTICLE Source Type: research
In this study, we found that recombinant mature pIL-22 (mpIL-22) inhibited the infection of multiple diarrhea viruses, including alpha coronavirus, porcine epidemic diarrhea virus (PEDV), transmissible gastroenteritis virus (TGEV), and porcine rotavirus (PoRV), in the intestinal porcine epithelial cell line J2 (IPEC-J2) cells. mpIL-22 up-regulated the expression of the antimicrobial peptide beta-defensin (BD-2), cytokine IL-18 and IFN-λ. Furthermore, we found that mpIL-22 induced phosphorylation of STAT3 on Ser727 and Tyr705 in IPEC-J2 cells. Inhibition of STAT3 phosphorylation by S3I-201 abrogated the antiviral abi...
Source: Antiviral Therapy - Category: Virology Source Type: research
Publication date: Available online 4 August 2016 Source:Veterinary Microbiology Author(s): Romana Moutelíková, Lucie Dufková, Jiří Kamler, Jakub Drimaj, Radim Plhal, Jana Prodělalová Population of wild boar is increasing in the whole Europe, the animals migrate close to human habitats which greatly increases the possibility of natural transmission between domestic animals or humans and wild boars. The aim of the study was to estimate in population of free-living wild boar in the Czech Republic the prevalence of enteric viral pathogens, namely rotavirus groups A and C (RVA and RVC), por...
Source: Veterinary Microbiology - Category: Veterinary Research Source Type: research
More News: Coronavirus | Gastroenteritis | Genetics | Microbiology | Rotavirus | Tetracycline