Orbital cellulitis in a neonate of the tooth bud origin : A case report.

Orbital cellulitis is a serious, yet uncommon infection in neonates. It can result in significant sight and life threatening complications. Most commonly, it occurs secondarily as the result of a spread of infection from the sinuses. Orbital cellulitis, secondary to dental infection is rare. We hereby report a case of orbital cellulitis secondary to dental infection in a 15‑day‑old neonate without any systemic features.

Antimicrobial susceptibility patterns of Salmonella enterica serotype typhi in eastern Nepal.

The aim of the present study was to evaluate antimicrobial susceptibility patterns with special reference to multidrug resistance, susceptibility to ciprofloxacin, and bacteriophage typing of Salmonella enterica serotype Typhi isolated from blood sent for culture in a tertiary-care teaching hospital in eastern Nepal during January 2000-December 2004. In total, 132 strains of S. enterica Typhi, isolated from 2,568 blood culture samples collected from cases of suspected enteric fever, were tested for susceptibility to commonly-used antimicrobials by the disc-diffusion method. There were 35 multidrug-resistant strains. None of the isolates were resistant to ciprofloxacin. Of 52 isolates tested for minimum inhibitory concentration (MIC) of ciprofloxacin, 36 (69.23%) showed reduced susceptibility (MIC >0.25 mg/L). Of 112 strains tested for nalidixic acid susceptibility, 86 (76%) were resistant. Strains with reduced susceptibility to ciprofloxacin and resistance to nalidixic acid could be correlated. The commonest phage type was El. Nalidixic acid susceptibility could be a useful screening test for the detection of decreased susceptibility of S. Typhi to ciprofloxacin, a drug which is commonly used even for minor ailments in this area.

Onychomycosis in eastern Nepal.

Onychomycosis, a fungal infection of the nail is responsible for up to 50.0% of all nail diseases. Though, dermatophytes are most frequently implicated as the causative agents in onychomycosis, yeast and molds are increasingly recognized as causative pathogens. This study was aimed to know the clinical and mycological pattern of onychomycosis in eastern Nepal. Eighty-two clinically diagnosed patients of onychomycosis attending the Dermatology Outpatient department of a tertiary hospital over a period of one year were enrolled in this study. Clipping from the severely affected nail and skin scrapping from active border of the skin lesions if associated were collected from each patient and subjected to microscopy and culture for identification of fungi. The commonest affected age group was 21-40 years. The male: female ratio was 2.7:1. Fifty-one patients had isolated fingernail involvement, while involvement of toenails was seen in 15 patients. Distolateral subungual onychomycosis (67%) was the commonest clinical type followed in decreasing order by superficial white onychomycosis (14.6%), proximal subungual onychomycosis (9.8%), candidal onychomycosis (7.4%) and total dystrophic onychomycosis (1.2%). Trichophyton mentagrophytes (28.8%) was the most common pathogen isolated followed by Trichophyton rubrum (21.2%), Trichophyton tonsurans (11.5%), Candida albicans (11.5%), Trichospron beigelii, (9.6%), Epidermophyton floccosum (7.7%), Trichophyton violaceum (5.8%), and Aspergillus flavus (3.9%). Distolateral subungual onychomycosis was the most common clinical presentation and T. mentagrophytes and T. rubruni were the most frequently isolated fungi for onychomycosis in eastern Nepal.

Prevalence of Shigella species and their antimicrobial resistance patterns in Eastern Nepal.

The study was conducted to determine the prevalence of Shigella species and their antimicrobial resistance patterns in eastern Nepal. Stool samples submitted to the diagnostic laboratory of B.P. Koirala Institute of Health Sciences, Nepal, during August 2000-July 2004, were cultured for Shigella species and were confirmed by biochemical and serological tests. Of 53 Shigella species isolated, Shigella dysenteriae type 1 was the most predominant isolate (73.7%), followed by S. flexneri (23%) and S. boydii (4%). The majority (79%) of Shigella species were isolated from children aged less than five years. An overall high resistance was observed for trimethoprim-sulphamethoxazole, ampicillin, nalidixic acid, mecillinam, and ciprofloxacin. There was a statistically significant (p < 0.001) increasing trend in the prevalence of ciprofloxacin resistance in S. dysenteriae type 1. The results suggest reconsideration of the empiric use of these antimicrobial agents for shigellosis. A further study is required to evaluate additional antimicrobial agents.