Penicillin-resistant pneumococci—implications for management of community-acquired pneumonia and meningitis

AbstractPenicillin-nonsusceptible Streptococcus pneumoniae isolates have become increasingly prevalent worldwide. They are well-known agents of community-acquired infections such as otitis media, pneumonia and bacterial meningitis. Therapy of pneumococcal infections is made difficult by the emergence and spread of bacterial resistance to penicillin and other beta-lactams, as well as other antimicrobials such as macrolides. This article reviews current concepts of epidemiology and the implications of penicillin-nonsusceptible pneumococci for management of community-acquired pneumonia and meningitis

Exploring determinants of antimicrobial prescribing behaviour using the theoretical domains framework.

Few theoretically-based, qualitative studies have explored determinants of antimicrobial prescribing behaviour in hospitals. Understanding these can promote successful development and implementation of behaviour change interventions (BCIs). To use the Theoretical Domains Framework (TDF) to explore determinants of clinicians' antimicrobial prescribing behaviour, identifying barriers (i.e., impediments) and facilitators to appropriate antimicrobial practice. Semi-structured interviews with purposively-sampled doctors and pharmacists with a wide range of specialties and expertise in Hamad Medical Corporation hospitals in Qatar. Interviews based on previous quantitative research and the TDF were audio-recorded, transcribed and independently analysed by two researchers using the TDF as an initial coding framework. Data saturation was achieved after interviewing eight doctors and eight pharmacists. Inter-related determinants of antimicrobial prescribing behaviour linked to ten TDF domains were identified as barriers and facilitators that may contribute to inappropriate or appropriate antimicrobial prescribing. The main barriers identified were around hospital guidelines and electronic system deficiencies (environmental context and resources); knowledge gaps relating to guidelines and appropriate prescribing (knowledge); restricted roles/responsibilities of microbiologists and pharmacists (professional role and identity); challenging antimicrobial prescribing decisions (memory, attention and decision processes); and professional hierarchies and poor multidisciplinary teamworking (social influences). Key facilitators included guidelines compliance (goals and intentions), and participants’ beliefs about the consequences of appropriate or inappropriate prescribing. Further education and training, and some changes to guidelines including their accessibility were also considered essential. Antimicrobial prescribing behaviour in hospitals is a complex process influenced by a broad range of determinants including specific barriers and facilitators. The in-depth understanding of this complexity provided by this work may support the development of an effective BCI to promote appropriate antimicrobial stewardship

Antimicrobial resistance patterns among Acinetobacter baumannii isolated from burn intensive care unit in Tripoli, Libya

Background: Acinetobacter baumannii is a troublesome and increasingly problematic healthcare-associated pathogen, especially in critical care unit. These organisms have a capacity for long-term survival in the hospital environment. Aim: This study aimed to investigates the drug resistance patterns of Acinetobacter baumannii strains isolated from burn ICU (BICU). Method: The antibiotic susceptibility of 176 isolates to imipenem, meropenem, gentamicin, ciprofloxacin, fusidic acid, amikacin, trimethoprim, cefepime, ceftazidime, ceftriaxone, cefotaxime, and amoxicillin-calvulanic acid was determined by disk agar diffusion test. Findings: The overall proportion of A. baumannii isolates among all clinical isolates has increased slightly throughout the study from 3.5% to 4.2%. Carpabenem remained the antimicrobial most active antibiotic against A. braumannii isolates compared with other antibiotics, during the two years there was an increase in resistance from 50.6% to 71.3% to imipenem (P<0.01), and meropenem from 50.6% to 74.5% (P<0.01). ICU isolates exhibited significantly higher level of resistance to imipenem (71.6%) and meropenem (73.4%) compared with non-ICU strains (42.6% and 44.6% respectively) (P<0.01). Conclusion: In conclusion, the high prevalence of multidrug resistance A. baumannii (97.7%) and increased resistance to imipenem and meropenem in our unit might be due to long hospital stay, intubation, surgery and previous antibiotic prescription. It would seem that practices to prevent cross-transmission are more important in controlling resistance

Rabies Virus Populations in Humans and Mice Show Minor Inter-Host Variability within Various Central Nervous System Regions and Peripheral Tissues

Rabies virus (RABV) has a broad host range and infects multiple cell types throughout the infection cycle. Next-generation sequencing (NGS) and minor variant analysis are powerful tools for studying virus populations within specific hosts and tissues, leading to novel insights into the mechanisms of host-switching and key factors for infecting specific cell types. In this study we investigated RABV populations and minor variants in both original (non-passaged) samples and in vitro-passaged isolates of various CNS regions (hippocampus, medulla oblongata and spinal cord) of a fatal human rabies case, and of multiple CNS and non-CNS tissues of experimentally infected mice. No differences in virus populations were detected between the human CNS regions, and only one non-synonymous single nucleotide polymorphism (SNP) was detected in the fifth in vitro passage of virus isolated from the spinal cord. However, the appearance of this SNP shows the importance of sequencing newly passaged virus stocks before further use. Similarly, we did not detect apparent differences in virus populations isolated from different CNS and non-CNS tissues of experimentally infected mice. Sequencing of viruses obtained from pharyngeal swab and salivary gland proved difficult, and we propose methods for improving sampling

First molecular analysis of rabies virus in Qatar and clinical cases imported into Qatar, a case report

Identifying the origin of the rabies virus (RABV) infection may have significant implications for control measures. Here, we identified the source of a RABV infection of two Nepalese migrants in Qatar by comparing their RABV genomes with RABV genomes isolated from the brains of a RABV infected camel and fox from Qatar

Supporting minority students through a reflexive approach to empowerment

Referring to the experiences of three Muslim refugee girls recently settled in Australia, this paper examines issues of schooling and empowerment. The paper draws on teacher and student interview data from a study that investigated inclusive approaches to addressing issues of cultural diversity in a secondary state high school in Queensland. The paper foregrounds the girls’ highly positive views of their experiences at the school; views that reflect the girls’ access to spaces of empowerment but belie the complexity and tensions involved in how empowerment was understood and approached by educators at the school. Theorising empowerment through poststructural understandings of agency, the paper examines conditions and ways of understanding that make possible spaces of empowerment for the girls. In particular, the paper argues for a reflexive approach to empowerment that is informed by an understanding of the framing discourses shaping minority student identity and a critical reflection on educator and school positionality

Drug-resistant tuberculosis: An experience from Qatar

This study was conducted to evaluate the characteristics, treatment outcome and risk factors associated with 223 drug-resistant tuberculosis (DR-TB) cases in the State of Qatar. A descriptive records-based retrospective study was conducted on patients registered at Communicable Disease Centre (CDC), Qatar to all consecutive microbiologically confirmed tuberculosis cases for the period January 2010 – March 2015. Demographic, clinical data, drug-resistance pattern of isolated mycobacteria and treatment outcome was assessed for the patient who completed their treatment in Qatar. Of 3301 patients with positive M. tuberculosis culture were analyzed; 223 (6.7%) were resistant to at least one drug. The overall prevalence of multi-d rug resistant TB (MDR-TB) was 1.2% (n = 38) of patients. A former resident of Indian sub contents was the most common demographic characteristic observed (64.1%). The outcome of treatment was assessed for 85 resistant cases with follow-up after completion of treatment. Cure and relapse rates were 97.6%, and 2.4%, respectively. Drug-resistant TB in Qatar is influenced by migration where the patients were probably infected. Rapid sputum sampling performed in the early stages of the disease, patient isolation, and drug-susceptibility testing should be the standard of care