Zoonotic sporotrichosis is a neglected fungal disease mainly caused by Sporothrix brasiliensis, transmitted from cats to humans, with a significant outbreak currently occurring in Brazil.
The study involved whole-genome sequencing of Sporothrix isolates collected from sporotrichosis cases in Brazil, Colombia, and the USA between 2013 and 2022, aiming to explore the genomic epidemiology of the disease.
Out of 72 isolates studied, 93% were from Brazil, with the majority being S. brasiliensis; comprehensive phylogenetic analyses revealed distinct genetic clades correlating with geographical origins and diverse transmission pathways.
An emerging fungal pathogen called Sporothrix spp. poses treatment challenges, especially in human and cat sporotrichosis cases.
Antifungal testing on 61 isolates from Brazil revealed that about 50% exhibited high resistance to itraconazole.
Phylogenetic analysis showed that resistant isolates come from diverse clades, and SNP analysis identified a specific gene mutation linked to azole resistance in two isolates, but no other resistance mechanisms were found in the others.
Bacterial bloodstream infections (BSI) caused by carbapenem-resistant Klebsiella pneumoniae (CRKp) are prevalent in patients with hematological malignancies and stem cell transplant recipients.
A study of 65 BSI episodes over 10 years identified acute leukemias as the most common underlying condition and highlighted mucosal barrier injury in the gastrointestinal tract as the primary cause of infection.
The research found that timely and appropriate antibiotic treatment significantly improved survival rates, while factors like hypotension at presentation and concurrent invasive fungal diseases were linked to higher 30-day mortality.