ABSTRACT
BACKGROUND: Healthcare workers (HCWs) have an increased risk of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection due to occupational exposure. Strict measures generally focus on the patient-to-HCW contacts. However, interactions between the HCWs also pose a high risk for SARS-CoV-2 exposure. AIMS: This study was aimed to investigate the effect of social contacts on the level of SARS-CoV-2 exposure risk among workers by broadening the current risk assessment algorithm. METHODS: Contact tracing records of the workers in a large university hospital between 19th March and 31st December 2020 were analysed. Multivariate conditional logistic regression models were estimated to evaluate factors associated with high-risk exposure for contacts among workers. RESULTS: Of the 329 exposed clusters, 260 (79%) were HCW-to-HCW contacted clusters. High-risk exposure was higher in the HCW-to-HCW contacts (44%), when compared to the patient-to-HCW contacts (5%) (P < 0.001). A total of 1827 HCWs contacted a laboratory-confirmed COVID-19-positive co-worker. Among the HCW-to-HCW contacts, high-risk exposure was higher in the support staff (49%, P < 0.001), in non-patient care settings (47%, P < 0.001) and in the social contacts (57%, P < 0.001). Social contacts between workers increased the high-risk exposure (adjusted odds ratio: 3.50, 95% confidence interval 2.62-4.69) in multivariate analysis. CONCLUSIONS: A significant association between social contacts among workers and high-risk exposure of SARS-CoV-2 was observed. The results of the study emphasize the need for policies regarding the improved protection of HCWs in social settings in addition to patient care services.
Subject(s)
COVID-19 , Occupational Exposure , Health Personnel , Humans , Occupational Exposure/adverse effects , Risk Assessment , SARS-CoV-2ABSTRACT
Staphylococcal infections are the major causes of morbidity in haemodialysis patients. The source of the staphylococci is the anterior nares. Elimination of nasal carriage of staphylococci could result in a remarkable decrease in the infection rate. The aim of this study was to investigate if there was a difference in the bacterial flora between the nasal vestibule and cavity as well as their antibiotic susceptibility in haemodialysis. Swab samples obtained from 35 haemodialysis patients were subjected to conventional microbiological methods. The antimicrobial susceptibility test was performed for Staphylococcus spp. using cephazolin, cephaclor, trimetoprim + sulfamethoxazole, amoxicillin, oxacillin, clindamycin, erythromycin, tetracycline, ampicillin + sulbactam and amoxicillin + clavulanic acid. Staphylococcus spp. was found more often in the vestibule than in the cavity (88.5 vs. 77.1%). The effectiveness of clindamycin, erythromycin and tetracycline was particularly striking for the methicillin-resistant Staphylococcus aureus and methicillin-resistant coagulase-negative Staphylococci isolates. In conclusion, existence of difference in bacterial flora between the nasal cavity and vestibule and their responsiveness to antibacterial agents may require reconsideration of elimination of secondary infections in haemodialysis patients.
Subject(s)
Anti-Bacterial Agents/pharmacology , Anti-Bacterial Agents/therapeutic use , Bacterial Infections/complications , Bacterial Infections/drug therapy , Nasal Cavity/drug effects , Nasal Cavity/microbiology , Renal Dialysis/statistics & numerical data , Adult , Female , Humans , Male , Middle Aged , Staphylococcal Infections/complications , Staphylococcal Infections/drug therapy , Young AdultABSTRACT
Castleman's disease in the parotid gland region is very rare. The most frequent site of involvement is the mediastinum. A 15-year-old female with Castleman's disease in the parotid region is herein reported.
Subject(s)
Castleman Disease/pathology , Castleman Disease/surgery , Parotid Diseases/pathology , Parotid Diseases/surgery , Adolescent , Female , HumansABSTRACT
All the aminoglycoside antibiotics now in clinical use are ototoxic. This study was designed to compare the toxic effects of four aminoglycoside antibiotics, streptomycin, gentamicin, amikacin and netilmicin, administered to guinea-pigs systemically (at respective doses of 125 mg/kg, 50 mg/kg, 150 mg/kg or 37.5 mg/kg, twice daily for 1 week) or topically via the transtympanic route (0.25 ml/kg in 4% saline, twice daily for 1 week). Chosen doses were 10-20 times higher than the recommended human dosage. Cochlear damage was observed in all animals that were given systemic and local aminoglycosides. The severity of the cochlear damage was in the order gentamicin, amikacin, streptomycin, netilmicin, with gentamicin being the most toxic. No statistically significant difference between the severity of cochlear damage resulting from the systemic and topical applications was detected.
Subject(s)
Amikacin/adverse effects , Anti-Bacterial Agents/adverse effects , Cochlea/drug effects , Gentamicins/adverse effects , Netilmicin/adverse effects , Streptomycin/adverse effects , Administration, Topical , Animals , Cochlea/pathology , Guinea Pigs , Hair Cells, Auditory, Outer/drug effects , Hair Cells, Auditory, Outer/pathology , Injections, Intraperitoneal , Organ of Corti/drug effects , Organ of Corti/pathology , Spiral Ganglion/drug effects , Spiral Ganglion/pathology , Stria Vascularis/drug effects , Stria Vascularis/pathologyABSTRACT
A case of a large dentigerous cyst containing a canine tooth in the maxillary antrum is presented. This case is of interest due because of its extensiveness and the presence of a canine tooth in the roof of the maxillary sinus. In addition, this caused a right-sided epiphora. Enucleation of the cyst containing the ectopic tooth was made.
