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The changing epidemiological profile of invasive infections (IIHi) is noted in the post-vaccination era. The aim of this study was to characterize phenotypically and genotypically invasive (Hi) isolates detected in Tunisian pediatric patients. A retrospective study was conducted in the microbiology laboratory of the Children's Hospital of Tunis over ten years (2013-2023).

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Persistent microbial infections and idiopathic pulmonary fibrosis - an insight into pathogenesis.

Front Cell Infect Microbiol

January 2025

Center for Metabolic and Degenerative Diseases, The Brown Foundation Institute of Molecular Medicine for Prevention of Human Diseases, UTHealth-McGovern Medical School, Houston, TX, United States.

Interstitial lung disease (ILD) is characterized by chronic inflammation and scarring of the lungs, of which idiopathic pulmonary fibrosis (IPF) is the most devastating pathologic form. Idiopathic pulmonary fibrosis pathogenesis leads to loss of lung function and eventual death in 50% of patients, making it the leading cause of ILD-associated mortality worldwide. Persistent and subclinical microbial infections are implicated in the acute exacerbation of chronic lung diseases.

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Facial paralysis is an infrequent and serious potential complication of acute otitis media (AOM). We describe a pediatric case of rapidly progressive facial paralysis as a secondary complication alongside AOM, caused by the non-typeable  (NTHi) strain, which was managed with facial nerve decompression, glucocorticoid medication, and antimicrobial chemotherapy. The reasons why NTHi becomes pathogenic in certain patients are not yet fully understood, and the specific interactions and adaptations that lead to complications must be further investigated, as they result in more complex treatment approaches.

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Article Synopsis
  • Non-typeable Haemophilus influenzae (NTHi) is a common cause of respiratory infections like pneumonia in kids and can be present in healthy individuals without causing symptoms.
  • This study investigates genetic differences between NTHi strains from healthy children compared to those with pneumonia, revealing that about 32% of genes vary between the two groups.
  • Key findings include changes in pathogenicity-related pathways and significant mutations in PBP3 that affect antibiotic resistance, suggesting new avenues for targeted treatment and diagnostics.
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