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She is the author or coau-thor of seven books and nearly two hundred articles and chapters on topics related to interpersonal and nonverbal communication, deception and credibility, mass media, and new communication technologies. Her current research focuses on interactivity, adaptation, and attunement in communication. JOSEPH A. BoNrro is Assistant(More)
A nation wide study on the microbial aetiology of cases of acute clinical mastitis in Swedish dairy cows was conducted with the aim to investigate changes in the microbial panorama compared to a previous study performed 1994-1995. Another aim was to investigate some agent-specific environmental and individual risk factors. Milk samples were collected from(More)
An in vivo model for studies of pharmacokinetic/pharmacodynamic (PK/PD) interactions of antimicrobials was developed. Tissue cages with a constant surface area but with different volumes were implanted in calves and infected with Mannheimia haemolytica. Penicillin was injected directly into the cages. With this procedure, different concentration-time(More)
AIMS In this study, the molecular diversity among clones of vancomycin resistant Enterococcus faecium with vanA gene (VRE) is investigated. The aims were to better understand why one clone is predominant in Swedish broiler production and to better assess the potential for zoonotic gene transfer from the different clones. METHODS AND RESULTS Twenty-six(More)
OBJECTIVE To evaluate an experimental model of the pharmacokinetic/pharmacodynamic (PK/PD) relationship of danofloxacin against Mannheimia haemolytica infection, using subcutaneously implanted tissue cages in calves. METHODS Tissue cages implanted subcutaneously in calves were infected with M. haemolytica and different concentration-time profiles of(More)
BACKGROUND In Sweden, knowledge about the role of enteropathogenic Escherichia coli in neonatal calf diarrhea and the occurrence of antimicrobial resistance in E. coli from young calves is largely unknown. This has therapeutic concern and such knowledge is also required for prudent use of antimicrobials. METHODS In a case control study Esherichia coli(More)
To investigate occurrence of acquired antimicrobial resistance in udder pathogens MICs in Staphylococcus aureus (n=211), coagulase-negative staphylococci (CNS) (n=56), Streptococcus uberis (n=113), Streptococcus dysgalactiae (n=152), Streptococcus agalactiae (n=6), Escherichia coli (n=163), and Klebsiella spp. (n=42) were determined using microdilution.(More)
Tissue cages implanted subcutaneously in calves were infected with Escherichia coli. Twenty-four hours later, the calves were treated either with single doses of 2.5 + 12.5 or 5 + 25 mg/kg trimethoprim (TMP) + sulfadoxine (SDX) or with five doses of 7.5 + 37.5 mg/kg TMP + SDX at 12-h intervals. In addition, one cage in each of three calves in the highest(More)
The primary objective of this study was to investigate calf and farm factors associated with antimicrobial-resistant Escherichia coli in the feces of preweaned dairy calves in Sweden. In particular, we investigated the effects of feeding calves colostrum and milk from cows treated with antimicrobials. The secondary objective was to describe the prevalence(More)
Mastitis is a common disease also among primiparous dairy cows. Identification of the extent and type of problem is important to initiate correct control measures. In Sweden, unique national production and disease databases are available. The main aim of the study was to investigate the occurrence of mastitis, measured by the annual incidence of(More)