Antimicrobial Susceptibility Pattern in Opportunistic Pathogens Isolated from Immunocompromised Patients.

BACKGROUND:  Brought with the advancements in transplantation science and the development of immunosuppressive agents, immunocompromised patients characterized with defective immunity have increased throughout the world with increased risk for opportunistic infections. This study provides an overview of the antimicrobial susceptibility pattern among opportunistic pathogens isolated from immunocompromised patients.  Methods: Clinical and laboratory records of immunocompromised patients [patients with chronic kidney disease neutropenia, diabetes, rheumatic heart disease acquired immune deficiency syndrome hepatitis B, hepatitis C, who were subjected to microbiological culture analysis in the Department of Clinical Microbiology, KIST Medical College and Teaching Hospital, for 2 years (January 2019 and December 2020) were analyzed. RESULTS:  Out of 8,402 immunocompromised patients, 954 (11.4%) patients were subjected to microbiological culture analysis. Among 954 patients, 253 (26.5%) patients [median(interquartile range) age: 52(31-67) years; male 138 (54.5%)] were infected. A total of 295 pathogens were isolated from 1,331 cultured samples. Infections due to Escherichia coli (n=71, 24.1%), Klebsiella spp. (n=55, 18.6%), Acinetobacter calcoaceticus-baumannii complex (n=35, 11.9%), Candida albicans (n=30, 10.2%), and Staphylococcus aureus (n=28, 9.5%) were frequently observed. Among the bacterial isolates (n=239), 81.6% (n=195) of bacteria were ß-lactamase producers, 51.0% (n=122) were multi-drug resistant, 9.2% (n=195) were extensively-drug resistant, 0.8% (n=195) were pan-drug resistant, and 35.7% (n=10) of S. aureus were methicillin-resistant Staphylococcus aureus. CONCLUSIONS:  The majority of infection in immunocompromised patients is caused by Gram-negative bacteria, and is often associated with a higher number of ß-lactamase producers and multi-drug resistant organisms. Prescriptions of antibiotics on the grounds of antimicrobial stewardship might help to reduce the burden of antimicrobial resistance.

Status of Intestinal Parasitic Infections in a Tertiary Care Center.

BACKGROUND: Intestinal parasitic infections (IPIs) are diseases of serious public health concern in low- and middle-income countries, including Nepal. Such infections can cause growth retardation and increased susceptibility to other parasitic infections. Hence, this study aims to assess the prevalence of IPIs among the patients attending a tertiary care hospital in central Nepal. METHODS: Clinical and laboratory records of patients, whose stool samples were collected and transported to the Department of Clinical Microbiology, KIST Medical College and Teaching Hospital, during 2 years (January 2019 and December 2020) were examined for parasitological findings, by conventional microscopy using normal saline and iodine preparation. RESULTS: Out of 3,146 patients included in the study, 411 (13.1%) patients (median age[IQR]: 27[12-45]) were infected with the intestinal parasites. Patients of different age groups, such as 20-30 years (16.1%), 10-20 years (14.1%), and 30-40 years (13.3%) were mostly infected. Infection was more common in females (221/1572, 14.1%) than males (190/1574, 12.1%). There were 373 (90.8%) cases of IPIs due to Entamoeba histolytica, 34 (8.3%) cases due to Giardia lamblia, and 4 (0.9%) cases due to helminths. The prevalence of IPI in the first and second years was 14.5% (260/1794) and 11.2% (151/1352), respectively. IPIs were more common in summer (n=87, 12.8%) and spring(n=81, 10.8%). CONCLUSIONS: Present study showed a declined prevalence of helminth infection. However, a higher rate of protozoan infection indicated the water source contamination with fecal matters and therefore urgencies for awareness among the public about hygienic practices.