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An Ex vivo Assay to Study Candida albicans Hyphal Morphogenesis in the Gastrointestinal Tract
Published on: July 1, 2020
Epidemiology, Modern Diagnostics, and the Management of Mucorales Infections
David Pham1, Annaleise R Howard-Jones2,3,4, Rebecca Sparks5
1Centre for Infectious Diseases & Microbiology, Westmead Hospital, Westmead, NSW 2170, Australia.
Abstract:
Mucormycosis is an uncommon, yet deadly invasive fungal infection caused by the Mucorales moulds. These pathogens are a WHO-assigned high-priority pathogen group, as mucormycosis incidence is increasing, and there is unacceptably high mortality with current antifungal therapies. Current diagnostic methods have inadequate sensitivity and specificity and may have issues with accessibility or turnaround time. Patients with diabetes mellitus and immune compromise are predisposed to infection with these environmental fungi, but COVID-19 has established itself as a new risk factor. Mucorales also cause healthcare-associated outbreaks, and clusters associated with natural disasters have also been identified. Robust epidemiological surveillance into burden of disease, at-risk populations, and emerging pathogens is required. Emerging serological and molecular techniques may offer a faster route to diagnosis, while newly developed antifungal agents show promise in preliminary studies. Equitable access to these emerging diagnostic techniques and antifungal therapies will be key in identifying and treating mucormycosis, as delayed initiation of therapy is associated with higher mortality.
Insights
Mucormycosis, a deadly fungal infection, is increasing globally. New diagnostics and antifungals are crucial for better outcomes, especially for at-risk populations including COVID-19 patients.
Area of Science:
- Medical Mycology
- Infectious Diseases
- Public Health
Background:
- Mucormycosis is a severe invasive fungal infection caused by Mucorales moulds, designated a high-priority pathogen group by the WHO.
- Increasing incidence and high mortality rates associated with current antifungal therapies highlight an urgent need for improved management strategies.
- COVID-19 has emerged as a significant new risk factor, alongside traditional predispositions like diabetes mellitus and immune compromise.
Purpose of the Study:
- To address the limitations of current diagnostic methods for mucormycosis, which suffer from inadequate sensitivity, specificity, and accessibility.
- To underscore the necessity for robust epidemiological surveillance to understand disease burden and identify at-risk populations.
- To highlight the potential of emerging diagnostic and therapeutic strategies in combating this deadly infection.
Main Methods:
- Review of current literature on mucormycosis epidemiology, diagnostics, and therapeutics.
- Analysis of the impact of risk factors including diabetes mellitus, immune compromise, and COVID-19.
- Evaluation of emerging diagnostic techniques (serological, molecular) and antifungal agents.
Main Results:
- Current diagnostic tools for mucormycosis lack sufficient accuracy and timely availability.
- COVID-19 is a newly identified significant risk factor contributing to mucormycosis incidence.
- Emerging diagnostic methods and novel antifungal agents show promise but require further validation and equitable access.
Conclusions:
- There is a critical need for enhanced epidemiological surveillance of mucormycosis.
- Advancements in diagnostic sensitivity, specificity, and accessibility are paramount for timely treatment initiation.
- Equitable access to novel antifungal therapies is essential to reduce the high mortality associated with mucormycosis.
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