Factors influencing mortality in COVID-19-associated mucormycosis: The international ID-IRI study

Med Mycol. 2024 Jul 4;62(7):myae064. doi: 10.1093/mmy/myae064.

Abstract

The emergence of COVID-19, caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), triggered a global pandemic. Concurrently, reports of mucormycosis cases surged, particularly during the second wave in India. This study aims to investigate mortality factors in COVID-19-associated mucormycosis (CAM) cases, exploring clinical, demographic, and therapeutic variables across mostly Asian and partly African countries. A retrospective, cross-sectional analysis of CAM patients from 22 medical centers across eight countries was conducted, focusing on the first 3 months post-COVID-19 diagnosis. Data collected through the ID-IRI included demographics, comorbidities, treatments, and outcomes. A total of 162 CAM patients were included. The mean age was 54.29 ± 13.04 years, with 54% male. Diabetes mellitus (85%) was prevalent, and 91% had rhino-orbital-cerebral mucormycosis. Surgical debridement was performed in 84% of the cases. Mortality was 39%, with advanced age (hazard ratio [HR] = 1.06, [P < .001]), rituximab use (HR = 21.2, P = .05), and diabetic ketoacidosis (HR = 3.58, P = .009) identified as risk factors. The mortality risk increases by approximately 5.6% for each additional year of age. Surgical debridement based on organ involvement correlated with higher survival (HR = 8.81, P < .001). The utilization of rituximab and diabetic ketoacidosis, along with advancing age, has been associated with an increased risk of mortality in CAM patients. A combination of antifungal treatment and surgical intervention has demonstrated a substantial improvement in survival outcomes.

Keywords: COVID-19; COVID-19-associated mucormycosis; immunosuppression; mortality.

Plain language summary

Over a third of patients who developed mucormycosis after COVID-19 died. Older people, those on specific immunosuppressive treatments, and those with diabetic ketoacidosis had a higher risk of death. However, undergoing surgery as part of treatment significantly improved survival.

Publication types

  • Multicenter Study

MeSH terms

  • Adult
  • Age Factors
  • Aged
  • Antifungal Agents / therapeutic use
  • COVID-19* / complications
  • COVID-19* / mortality
  • Comorbidity
  • Cross-Sectional Studies
  • Debridement
  • Diabetic Ketoacidosis / complications
  • Diabetic Ketoacidosis / mortality
  • Female
  • Humans
  • Male
  • Middle Aged
  • Mucormycosis* / complications
  • Mucormycosis* / epidemiology
  • Mucormycosis* / mortality
  • Retrospective Studies
  • Risk Factors
  • Rituximab / therapeutic use
  • SARS-CoV-2

Substances

  • Rituximab
  • Antifungal Agents