Sino-orbital mucormycosis in a COVID-19 patient: A case report

Iranian patients co-infected with COVID-19 and mucormycosis: the most common predisposing factor, clinical outcomes, laboratory markers and diagnosis, and drug therapies

BACKGROUND

The newly emerged pandemic of coronavirus disease-2019 (COVID-19) is the world's main health challenge because infected patients become vulnerable to a variety of opportunistic diseases.

OBJECTIVE

This study aimed to assess clinical outcomes, diagnosis, utilized drug therapies, and ongoing COVID-19 practices in Iranian cases co-infected with COVID-19 and mucormycosis.

PARTICIPANTS AND METHODS

A case-series analysis was conducted in the presence of 10 patients with COVID-19 and mucormycosis co-infection (two men and eight women; mean age of 48.8 years) from March to October 2020. Demographic variables, signs/symptoms, and comorbidities of all patients were recorded. COVID-19 was confirmed with reverse transcription polymerase chain reaction (RT-PCR) nasopharyngeal swab tests and high-resolution computed tomography (HR-CT)_ scans.

RESULTS

All patients had a positive RT-PCR for SARS-CoV-2. Eight patients had a history of diabetes, while three of them exhibited a hypertension history. Remarkable laboratory findings were elevated fasting blood sugar in 6 cases and anaemia in four patients. A rhino-orbital-cerebral of mucormycosis in all patients was detected based on HR-CT scans and otorhinolaryngological or ophthalmological examinations. Neurological disorders including facial, trigeminal, optic, and oculomotor nerve involvement resulted in paraesthesia, pain, ptosis, no light perception, blurred vision, and papilledema in five cases. Maxillary and ethmoid sinuses were the most common sites of involvement.

CONCLUSION

Vulnerable COVID-19 patients with comorbidities, any facial involvements, or treated by excessive doses of glucocorticoids and antibiotics should undergo precise examinations during the appearance of early signs and hospitalization to diagnose and treat mucormycosis using the standard care and antifungal treatments.

Mucormycosis and COVID-19 pandemic: Clinical and diagnostic approach

The pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is yet to be controlled worldwide, especially in India. The second wave of coronavirus disease 2019 (COVID-19) led to panic and confusion in India, owing to the overwhelming number of the population that fell prey to this highly infectious virus of recent times. In the second wave of COVID-19, the patients had to fight both the virus and opportunistic infections triggered by fungi and bacteria. Repeated use of steroids, antibiotics, and oxygen masks during the management of severely and critically ill COVID-19 patients nurtured opportunistic infections such as mucormycosis. Despite mucormycosis being a decades-old disease, it has gained notice of its widespread occurrence in COVID-19 patients throughout India. Instances of mucormycosis are usually unearthed in immunocompromised individuals and are caused by the inhalation of filamentous fungi, either from the natural environment or through supportive care units. In the recent outbreak during the second wave of COVID-19 in India, it has been seen to cause secondary infection as it grows along with the treatment of COVID-19. Furthermore, COVID-19 patients with comorbidities such as diabetes were more likely to have the mucormycosis co-infection because of their challenged immune systems' inability to fight it. Despite the hype, mucormycosis still remains neglected and least studied, which is predominantly due to all focus on diagnostics, vaccine, and therapeutic research. In this review, we emphasize mainly on the association of mucormycosis in COVID-19 patients. We also present the molecular mechanism of mucormycosis for a better understanding of the fungal infections in patients who have recently been infected with SARS-CoV-2. Better understanding of fungal pathogens, immediate diagnosis, and management of the infections are crucial in COVID-19 patients, as high mortalities have been recorded in co-infected patients despite recovery from COVID-19.

Mucormycosis infection in patients with COVID-19: A systematic review

INTRODUCTION

Several reports previously described mucormycosis co-infection in patients with COVID-19. As mucormycosis and COVID-19 co-infection might adversely affect patients' outcomes, we aimed to systematically review the related evidence and the subsequent outcomes.

METHODS

We conducted a systematic review of relevant articles searching the keywords in the online databases of PubMed, Scopus, Embase, Cochrane, and Web of Science. All the records from the start of the pandemic until June 12th, 2021 underwent title/abstract and then full-text screening process, and the eligible studies were included. We did not include any language or time restrictions for the included studies.

RESULTS

We found 31 eligible studies reporting 144 total cases of COVID-19 and mucormycosis co-infection. The nose, cranial sinuses, and orbital cavity were the most commonly involved organs, although the cerebrum, lungs, and heart were also involved in the studies. Pre-existing diabetes mellitus (DM), as well as corticosteroid use, were the most commonly identified risk factors, but other underlying conditions and immunomodulatory drug use were also present in several cases. Aspergillus was the most commonly reported micro-organism that caused further co-infections in patients with concurrent COVID-19 and mucormycosis. As most of the studies were case reports, no reliable estimate of the mortality rate could be made, but overall, 33.6% of the studied cases died.

CONCLUSION

Early diagnosis of mucormycosis co-infection in COVID-19 patients and selecting the right treatment plan could be a challenge for physicians. Patients with underlying co-morbidities, immunocompromised patients, and those receiving corticosteroids are at higher risk of developing mucormycosis co-infection and it is crucial to have an eye examination for early signs and symptoms suggesting a fungal infection in these patients.

Epidemiology of Mucormycosis Cases During the Second Wave of COVID-19 in a Tertiary Care Institute in Western Rajasthan, India

Introduction: Mucormycosis is a serious but rare fungal infection that showed a sharp surge during the second wave of coronavirus disease 2019 (COVID-19) in India. This study aimed to describe the epidemiological aspects of mucormycosis cases presenting to a tertiary care centre of Western Rajasthan, India, as well as to identify potential risk factors for Mucormycosis.

Methods: This cross-sectional descriptive study included 55 patients admitted with a diagnosis of mucormycosis between May and June, 2021, covering the second wave's post-COVID-19 period. Data was collected using a pre-designed, semi-structured questionnaire and hospital case sheets.

Results: The mean age of the patients was 54.4±12.53 years, with a male-to-female ratio of 1.89:1. Of the patients, 49% were obese and had no prior history of diabetes. Most COVID-19 patients (54.6%) were treated at home and did not require oxygen support during their COVID-19 course. The majority (89%) were on steroid medication, which was mainly intravenous (93.8%) and lasted 5-10 days in most patients. Rhinoorbitocerebral mucormycosis was the most common type seen in this setting, with symptoms appearing 15-30 days after the onset of COVID-19 symptoms. During the fungal infection, about 61.8% of patients had random blood sugar readings of more than 140 mg/dl. Mortality occurred in 14.5% of patients with mucormycosis. Mortality was observed to be associated with high BMI, raised glycated haemoglobin (HBA1C), and urban residency.

Conclusion: Mucormycosis appears to be caused by impaired glycemic control due to pre-existing or new-onset diabetes, which may be exacerbated by unintentional glucocorticoid use. It is necessary to use steroids with caution and maintain care for at least 15-30 days after the onset of COVID-19 symptoms.

Epidemiological Mucormycosis treatment and diagnosis challenges using the adaptive properties of computer vision techniques based approach: a review

As everyone knows that in today's time Artificial Intelligence, Machine Learning and Deep Learning are being used extensively and generally researchers are thinking of using them everywhere. At the same time, we are also seeing that the second wave of corona has wreaked havoc in India. More than 4 lakh cases are coming in 24 h. In the meantime, news came that a new deadly fungus has come, which doctors have named Mucormycosis (Black fungus). This fungus also spread rapidly in many states, due to which states have declared this disease as an epidemic. It has become very important to find a cure for this life-threatening fungus by taking the help of our today's devices and technology such as artificial intelligence, data learning. It was found that the CT-Scan has much more adequate information and delivers greater evaluation validity than the chest X-Ray. After that the steps of Image processing such as pre-processing, segmentation, all these were surveyed in which it was found that accuracy score for the deep features retrieved from the ResNet50 model and SVM classifier using the Linear kernel function was 94.7%, which was the highest of all the findings. Also studied about Deep Belief Network (DBN) that how easy it can be to diagnose a life-threatening infection like fungus. Then a survey explained how computer vision helped in the corona era, in the same way it would help in epidemics like Mucormycosis.

Mucormycosis in COVID-19: A systematic review of literature

Coronavirus disease 2019 (COVID-19) is an acute viral illness caused by severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2). Opportunistic infections such as mucormycosis have been reported among COVID-19 patients particularly in South Asian countries during the second wave of this pandemic. It is necessary to re-evaluate any changes in traditional risk factors associated with mucormycosis such as diabetes mellitus, organ transplant, etc in the precedent of ongoing COVID-19 pandemic. We conducted a systematic review using electronic databases. A total of 115 COVID-19 patients who were diagnosed with mucormycosis were included in this study. Diabetes mellitus was the most common co-morbidity with 77.1%, followed by hypertension (29.5%) and renal disease (14.3%). 55.2% of the patients had received dexamethasone for COVID-19 infection. Ten patients (11.5%) had received tocilizumab. Sinuses were the most common site of mucormycosis among COVID-19 patients at 79.4% with maxillary sinus (47.4%) being most commonly infected. Orbits were the second most prevalent site at 56.7% and lungs were infected with mucor at 11.3%. The mean duration between the diagnosis of COVID-19 infection and mucormycosis was 16.15 days (range 2-90 days). Cavernous sinus was either infiltrated or encased in 14 patients (14.4%). Cerebral involvement was seen in terms of abscess, infarcts, or edema in 12 patients (12.4%). Only 76 patients had data on the outcomes, out of which 37 (48.7%) patients had died. Diabetes mellitus is still the most common co-morbidity similar to non-COVID-19 patients. More than 90% of the patients with COVID-19 infection had received steroids. Complications such as cavernous sinus thrombosis, cerebral infarcts, abscesses were common. Indiscriminate use of steroids in patients needs to be avoided and focus needs to be put on tight blood sugar control in diabetic patients. Studies are needed to confirm the role of the SARS-CoV-2 virus in causing immune dysfunction and mucormycosis.

Imaging of Hematological Patients in the Era of COVID-19

The COVID-19 pandemic, caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), resulted in changes in management and imaging routines for patients with hematological malignancies. Treating physicians had to familiarize themselves with a new disease, with distinct imaging manifestations, sometimes overlapping with other infections prevalent in this patient population. In some aspects, infected hematological patients might exhibit a different disease course, and routine imaging in asymptomatic hematological patients may result in unexpected COVID-19 findings, implying covert infection, that should be further explored. Furthermore, some complications of hematological diseases and treatments may present with findings similar to COVID-19 manifestations, and treating physicians must consider both possibilities in the differential diagnosis. In this review, we aimed to present the influence the COVID-19 pandemic had on hematological malignancy imaging.

COVID-19 associated mucormycosis - An emerging threat

Coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) rapidly become a global threaten since its emergence in the end of 2019. Moreover, SARS-CoV-2 infection could also present with co-infection or secondary infection by other virus, bacteria, or fungi. Among them, mucormycosis is a rare but aggressive fungal disease and it mainly affects patients particularly with poorly controlled diabetes mellitus with diabetic ketoacidosis (DKA). We here did a comprehensive review of literature reporting COVID-19 associated with mucormycosis (CAM) cases, which have been reported worldwide. The prevalence is higher in India, Iran, and Egypt than other countries, particularly highest in the states of Gujarat and Maharashtra in India. Poor diabetic control and the administration of systemic corticosteroids are the common precipitating factors causing mucormycosis in the severe and critical COVID-19 patients. In addition, COVID-19 itself may affect the immune system resulting in vulnerability of the patients to mucormycosis. Appropriate treatments of CAM include strict glycemic control, extensive surgical debridement, and antifungal therapy with amphotericin B formulations.

Screening of potential antigens from whole proteome and development of multi-epitope vaccine against Rhizopus delemar using immunoinformatics approaches

Mucormycosis is a deadly fungal disease mainly caused by Rhizopus oryzae (strain 99-880), also known as Rhizopus delemar. Previously, mucormycosis occurs in immunocompromised patients of diabetes mellitus, cancer, organ transplant, etc. But there was a drastic increase in mucormycosis cases in the ongoing COVID-19 pandemic. Despite several available therapies and antifungal treatments, the mortality rate of mucormycosis is about more than 50%. Currently, there is no vaccine available in the market for mucormycosis that urgently needs to develop a potential vaccine against mucormycosis with high efficacy. In the present study, we have screened 4 genome-derived predicted antigens (GDPA) through sequential filtration of the whole proteome of R. delemar using different benchmarked bioinformatics tools. These 4 GDPA along with 4 randomly selected experimentally reported antigens (ERA) were sourced for prediction of B- and T- cell epitopes and utilized in designing of two potential multi-epitope vaccine candidates which can induce both innate and adaptive immunity against R. delemar. Besides these, comparative immune simulation studies and in silico cloning were performed using L. lactis as an expression system for their possible uses as oral vaccines. This is the first multi-epitope vaccine designed against R. delemar through systematic pipelined reverse vaccinology and immunoinformatic approaches. Although the wet-lab based experimental validation of designed vaccines is required before testing in the preclinical model, the current study will significantly help in reducing the cost of experimentation as well as improving the efficacy of vaccine therapy against mucormycosis and other pathogenic diseases.Communicated by Ramaswamy H. Sarma.

Mucormycosis (black fungus) ensuing COVID-19 and comorbidity meets - Magnifying global pandemic grieve and catastrophe begins

Post COVID-19, mucormycosis occurred after the SARS-CoV-2 has rampaged the human population and is a scorching problem among the pandemic globally, particularly among Asian countries. Invasive mucormycosis has been extensively reported from mild to severe COVID-19 survivors. The robust predisposing factor seems to be uncontrolled diabetes mellitus, comorbidity and immunosuppression acquired through steroid therapy. The prime susceptive reason for the increase of mucormycosis cases is elevated iron levels in the serum of the COVID survivors. A panoramic understanding of the infection has been elucidated based on clinical manifestation, genetic and non- genetic mechanisms of steroid drug administration, biochemical pathways and immune modulated receptor associations. This review lime-lights and addresses the "What", "Why", "How" and "When" about the COVID-19 associated mucormycosis (CAM) in a comprehensive manner with a pure intention to bring about awareness to the common public as the cases are inevitably and exponentially increasing in India and global countries as well. The article also unearthed the pathogenesis of mucormycosis and its association with the COVID-19 sequela, the plausible routes of entry, diagnosis and counter remedies to keep the infection at bay. Cohorts of case reports were analysed to spotlight the link between the pandemic COVID-19 and the nightmare-mucormycosis.

When Worlds Collide: An Interesting Case of Rhinocerebral Mucormycosis Exacerbated by COVID-19 and Diabetic Ketoacidosis Complicated by Intraorbital Hematoma

Mucormycosis is a devastating fungal infection seen in patients who are immunosuppressed or in severe inflammatory states. Mucormycosis has been increasingly seen in the setting of the novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) virus. We describe a 68-year-old male with a past medical history of uncontrolled diabetes mellitus who presented with acute vision loss and was found to have concomitant diabetic ketoacidosis (DKA) and coronavirus disease 2019 (COVID-19) infection on presentation. Rhinocerebral mucormycosis was suspected given the patient's presentation and was confirmed with an ethmoidal sinus biopsy. Our case was further complicated by the presence of cavernous sinus thrombosis, cerebral infarcts, and, later, the development of a left orbital hematoma following therapeutic anticoagulation. This case report aims to address the rare but now increasing incidence of rhinocerebral mucormycosis in the setting of COVID-19, further complicated by DKA, cerebral thrombosis, and intraorbital hematoma.

Rhinocerebral Mucormycosis With Brain Abscess Presenting as Status Epileptucus in a COVID-19-Infected Male: A Calamitous Complication

With the evolution of COVID-19 disease, the emergence of more complications associated with COVID-19 is taking place. Mucormycosis is the most common opportunistic fungal infection encountered after COVID-19. In this case report, we describe a case of a 61-year-old male type 2 diabetic with sino-orbital-cerebral mucormycosis infection who was treated with conventional guidelines for a recent COVID-19 infection and further presented with generalized tonic-clonic status seizures. Neuroimaging revealed sino-orbital mucormycosis with right frontal lobe abscess. He was treated with anti-epileptics, steroids, amphotericin-B, and functional endoscopic sinus surgery (FESS).

COVID-19-associated mucormycosis of head-and-neck region: A systematic review

BACKGROUND AND AIM

With the second wave of COVID-19, there has been a substantial rise in opportunistic infections like mucormycosis. Mucormycosis is a fatal fungal infection and understanding the associated risk factors and their management plays a key role to reduce mortality and morbidity caused due to such infections. This systematic review was conducted to assess the risk factors, clinical characteristics and to understand the pathogenesis of COVID-19-associated mucormycosis (CAM) affecting the head-and-neck region.

METHODS

The PubMed database was searched with the keywords; ((Mucormycosis) OR (invasive fungal sinusitis)) AND (COVID-19) and the PRISMA chart was prepared for the selection of the reports based on the inclusion and exclusion criteria.

RESULTS

A total of 261 cases of CAM affecting the head-and-neck region were analyzed in this systematic review. Most of the patients presented with rhino-orbital/rhino-orbito-cerebral form of mucormycosis (rhino-orbital mucormycosis/rhino-orbital-cerebral mucormycosis). Pulmonary mucormycosis along with rhino-orbital form, involvement of hard palate, and maxillary sinus was seen in one case each. A total of 224 (85.8%) patients were diabetic, 68 (30.3%) of them had poor glycemic control. Steroids were administered in 210 (80.4%) patients. Except for two, antifungal treatment was given to all patients. Follow-up data revealed 67 (25.6%) deaths and 193 (73.9%) were alive with one patient lost during follow-up.

CONCLUSION

The findings of this systematic review suggested that the occurrence of mucormycosis in COVID-19 patients is related to the inherent effects of COVID-19 infection on the immune system, comorbidities especially diabetes, and treatment aspects. Hence, a detailed understanding of these factors may aid in the personalized management of CAM and improve the disease outcome.

RELEVANCE FOR PATIENTS

The risk factors in patients affected by CAM should be recognized and closely monitored in post-COVID-19 patients. A multidisciplinary team must be in place to reduce the mortality and morbidity in such patients.

Mucormycosis following COVID-19 infection-An epidemic developing in a pandemic, a case series from a tertiary care hospital of India

When the world is still struggling to fight the Coronavirus disease-19 pandemic, an epidemic of mucormycosis following the COVID-19 infection is increasing in India. Mucormycosis is a rare life-threatening fungal infection with a high mortality rate. Is this increase due to the rampant usage of corticosteroids, some immune dysfunction in COVID-19, uncontrolled blood sugar, increased ferritin, use of industrial oxygen, use of unsterile mask, or use of unsterile water as a humidifier in oxygen delivery systems? This remains a question. In this case series, we present five cases of rhino-orbito-cerebral mucormycosis which followed after the COVID-19 infection in these patients. We have included patients’ clinical, laboratory, and radiological data in this case series and reviewed the literature.

The role of SARS-CoV-2 immunosuppression and the therapy used to manage COVID-19 disease in the emergence of opportunistic fungal infections: A review

Since December 2019 SARS-CoV-2 infections have affected millions of people worldwide. Along with the increasing number of COVID-19 patients, the number of cases of opportunistic fungal infections among the COVID-19 patients is also increasing. There have been reports of the cases of aspergillosis and candidiasis in the COVID-19 patients. The COVID-19 patients have also been affected by rare fungal infections such as histoplasmosis, pneumocystosis, mucormycosis and cryptococcosis. These fungal infections are prolonging the stay of COVID-19 patients in hospital. In this study several published case reports, case series, prospective and retrospective studies were investigated to explore and report the updated information regarding candidiasis, crytptococcosis, aspergillosis, mucormycosis, histoplasmosis, and pneumocystosis infections in COVID-19 patients. In this review, the risk factors of these co-infections in COVID-19 patients have been reported. There have been reports that the comorbidities and the treatment with corticoids, monoclonal antibodies, use of mechanical ventilation, and use of antibiotics during COVID-19 management are associated with the emergence of fungal infections in the COVID-19 patients. Hence, this review analyses the role of these therapies and comorbidities in the emergence of these fungal infections among COVID-19 patients. This review will help to comprehend if these fungal infections are the result of the co-morbidities, and treatment protocol followed to manage COVID-19 patients or directly due to the SARS-CoV-2 infection. The analysis of all these factors will help to understand their role in fungal infections among COVID-19 patients which can be valuable to the scientific community.

Cumulative Mortality and Factors Associated With Outcomes of Mucormycosis After COVID-19 at a Multispecialty Tertiary Care Center in India

Importance

An outbreak of COVID-19-associated rhino-orbitocerebral mucormycosis (CAM) has occurred in many parts of the world. Although the clinical profile and risk factors for CAM have been studied, cumulative mortality and its risk factors have not.

Objective

To report the cumulative mortality rates at different times in cases with CAM and identify risk factors for CAM-associated mortality.

Design, Setting, and Participants

This retrospective case-control study was conducted from March 1 to May 30, 2021, in a tertiary care multispecialty hospital in western India. All patients diagnosed with CAM and with a minimum follow-up of 30 days or those who died before 30 days due to CAM were included.

Main Outcomes and Measure

Cumulative mortality in CAM using survival analysis.

Results

A total of 73 consecutive patients with CAM with a mean (SD) age of 53.5 (12.5) years were included in the analysis, of whom 48 (66%) were men. CAM developed at a median of 28 (IQR, 15-45; range, 4-90) days after recovery from COVID-19. Of the 73 patients with CAM, 26 (36%) died; the cumulative probability of death was 26% (95% CI, 16%-41%) at day 7 and doubled to 53% (95% CI, 39%-69%) at day 21. Sinus debridement was performed in 18 of 51 patients (35%), and 5 of 52 (10%) underwent exenteration, whereas intravenous lyophilized amphotericin B was administered to 48 patients (66%). A multivariate Cox proportional hazards regression analysis showed that receiving mechanical ventilation in the past was associated with a nearly 9-fold increased risk of death (hazard ratio [HR], 8.98; 95% CI, 2.13-38.65; P = .003), and patients who had visual acuity of light perception or better had a 46% lower risk of death (HR, 0.56; 95% CI, 0.32-0.98; P = .04). Intravenous amphotericin B administration was associated with a reduced rate of exenteration (0 vs 5 of 25 [20%]; P < .001). On multivariate analysis, those who received intravenous amphotericin B had a 69% reduced risk of death (HR, 0.31; 95% CI, 0.06-1.43; P = .13).

Conclusions and Relevance

These findings suggest that the mortality rate after rhino-orbitocerebral mucormycosis is high and that a subgroup of patients with severe COVID-19 or presenting with severe orbital disease are more likely to die within 10 days of admission.

Hyperferritinemia and the Extent of Mucormycosis in COVID-19 Patients

Introduction Coronavirus disease 2019 (COVID-19) disease attributed to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has shown associations with various fungal opportunistic infections such as mucormycosis, invasive candidiasis, and aspergillosis, which have contributed to the mortality of the disease. In India, the incidence of mucormycosis had risen rapidly during the second wave. There is ample literature demonstrating the role of iron in the pathogenesis of mucormycosis. The hyperferritinemia associated with COVID-19 may have played a significant role in promoting the invasion and extent of the fungus. Aims and objectives The study aimed to analyze the association between serum ferritin levels and the extent of involvement of mucormycosis in patients affected with COVID-19. Methodology A single-center cross-sectional study was conducted using retrospective hospital record data. G*Power statistical analysis software was used to compute the sample size of 62 (31+31). The radiological data were used to determine the extent of involvement. Results A statistically significant difference was seen in levels of serum ferritin (p = 0.008) between the radiologically judged two groups of the mild extent of invasion of mucormycosis (rhinosinusitis) and severe extent of invasion (rhino-orbital/cerebral mucormycosis), with a severe extent seen with the group having higher levels of serum ferritin. Severe extent of invasion was seen in 53.6% of patients with diabetes mellitus and 62.5% of patients with both diabetes and hypertension. Conclusion The hyperferritinemia not only presents as a marker of the systemic inflammatory process in COVID-19 but also indicates increased free iron, which thereby aids the growth and extent of involvement by the fungus (R hizopus oryzae). In individuals with diabetes and hypertension, the severity was greater. Controlling catastrophic outcomes in individuals with high serum ferritin levels necessitates extra caution.

Early percutaneous tracheostomy in COVID19 patients with failed intubation: A case series

INTRODUCTION

COVID19 and pulmonary dysfunction leading to acute respiratory distress syndrome (ARDS).

CASE STUDY PRESENTATION

Herein we presented the cases of failed intubation that was replaced by early percutaneous dilational tracheostomy. The procedure is safe for the patients, doctors and clinical staff.

CONCLUSION

Additionally, we report mucormycosis after COVID19 treatment that was potentially due to immunosuppressive drugs.

A multicentric observational study of imaging findings in COVID-19-related rhino-orbito-cerebral mucormycosis: a new Pandora’s box

Background

There is a sudden rise of fungal infection with corona virus disease. This is attributed to the immunomodulation by the disease and the drugs used, diabetes mellitus, steroid use, oxygen inhalation using dirty water, use of zinc and iron supplements, etc. Early diagnosis and prompt medical and surgical intervention is the mainstay of treatment. This can greatly reduce the high morbidity and mortality associated with this disease. The objective of the study is to describe the imaging findings of acute invasive rhino-orbito-cerebral mucormycosis (ROCM) in 25 patients with severe acute respiratory syndrome corona virus 2, from three different centers with proven mucormycosis. Special emphasis is placed on the signal enhancement patterns of sinonasal mucosa, the earliest and most common findings. Statistical analysis was performed using descriptive statistics.

Results

Computed tomography (CT) and magnetic resonance imaging (MRI) of 25 patients showed most commonly involved sinuses as maxillary and ethmoid sinuses (19, 76%) together. Sino-nasal mucosal thickening was the most common finding (24, 96%). Periantral infiltration (18, 72%) preceded before orbital (15, 60%), cerebral (5, 20%) and vascular (2, 8%) complications, with grossly intact bones. Sinus wall erosions were seen in only 2 patients (8%). Palatal (22%) and maxillary alveolar arch erosion (39%) were frequent findings. CT showed minimally enhancing hypodense soft tissue thickening as the predominant finding in involved areas, while MRI showed T1 and T2 iso- to hypointense mucosal thickening (62%) and intense (43%) and no (33%) contrast enhancement as the main finding.

Conclusions

Contrast enhanced MRI is better at demonstrating early mucosal abnormalities, turbinate necrosis, non-enhancing devitalized tissues, orbital apex involvement and intra-cerebral extension. Imaging findings of inflammatory tissue infiltration adjacent to the paranasal sinuses in premaxillary, retroantral fat, facial muscles, pterygopalatine fossa, temporal, infratemporal fossa and extraconal orbital fat along with typical patterns of sinonasal mucosal enhancement should raise the suspicion of acute invasive fungal etiology given the short duration of history and immunocompromised status. High incidence of periantral and orbital extension of the disease is suggestive of acute invasive form of fungal infection. Also the rapidly progressive inflammatory changes without much bone involvement should suggest the suspicion of ROCM. Bony, cerebral and vascular involvements are relatively late complications.

Supplementary Information

The online version contains supplementary material available at 10.1186/s43055-021-00631-w.

Epidemiology and Pathophysiology of COVID-19-Associated Mucormycosis: India Versus the Rest of the World

The coronavirus disease 2019 (COVID-19) pandemic has led to a concerning resurgence of mucormycosis. More than 47,000 cases of mucormycosis were reported in three months from India. We update our systematic review on COVID-19-associated mucormycosis (CAM) till June 21st, 2021, comparing cases reported from India and elsewhere. We included individual patient details of 275 cases of CAM, of which 233 were reported from India and 42 from the rest of the world. Diabetes mellitus was the most common underlying risk factor for CAM in India than in other countries. The fatality rate of cases reported from India (36.5%) was less than the globally reported cases (61.9%), probably due to the predominance of rhino-orbital mucormycosis. On a multivariate analysis, we found that pulmonary or disseminated mucormycosis cases and admission to the intensive care unit were associated with increased mortality, while combination medical therapy improved survival. The paucity of pulmonary and disseminated mucormycosis cases from India suggests that these cases were either not diagnosed or reported, further supported by a trend of search data from the Google search engine. In this review, we discuss the factors explaining the substantial rise in cases of CAM. We also propose a hypothetical model describing the epidemiologic triad of CAM.

Machine learning based predictive model and systems-level network of host-microbe interactions in post-COVID-19 mucormycosis

Mucormycosis, a rare infection is caused by fungi Mucorales. The affiliation of mucormycosis with Coronavirus disease (COVID-19) is a rising issue of concern in India. There have been numerous case reports of association of rhino-cerebral-orbital, angioinvasive, pulmonary, respiratory and gastrointestinal tract related mucormycosis in patients with history of COVID-19. The immune dysregulation, preposterous use of steroids, interleukin-6-directed therapies and mechanical ventilation in COVID-19 immunocompromised individuals hypothesizes and predisposes to advancement of mucormycosis. The gaps in mode of presentation, disease course, diagnosis and treatment of post-COVID-19 mucormycosis requires critical analysis in order to control its morbidity and incidence and for prevention and management of opportunistic infections in COVID-19 patients.

Our study performs machine learning, systems biology and bioinformatics analysis of post-COVID-19 mucormycosis in India incorporating multitudinous techniques. Text mining identifies candidate characteristics of post-COVID-19 mucormycosis cases including city, gender, age, symptoms, clinical parameters, microorganisms and treatment. The characteristics are incorporated in a machine learning based disease model resulting in predictive potentiality of characteristics of post-COVID-19 mucormycosis. The characteristics are used to create a host-microbe interaction disease network comprising of interactions between microorganism, host-microbe proteins, non-specific markers, symptoms and drugs resulting in candidate molecules. R1A (Replicase polyprotein 1a) and RPS6 (Ribosomal Protein S6) are yielded as potential drug target and biomarker respectively via potentiality analysis and expression in patients. The potential risk factors, drug target and biomarker can serve as prognostic, early diagnostic and therapeutic molecules in post-COVID-19 mucormycosis requiring further experimental validation and analysis on post-COVID-19 mucormycosis cases.

Incidence, cumulative mortality and factors affecting the outcome of COVID-19-associated mucormycosis from Western India

Purpose

To report the incidence, cumulative mortality, and factors influencing the outcomes from a large series of COVID-19-associated mucormycosis (CAM) from western India.

Methods

Consecutive patients with CAM between March 1 and May 10, 2021, with a minimum follow-up of 1 month were included. We recorded the presence of diabetes, use of steroids, and need for non-invasive ventilation (NIV) from the case files. The features of orbital involvement, treatment administered, and outcomes, i.e., death, orbital exenteration, or recovery were noted. Cumulative probability of adverse outcomes, defined as either death or exenteration, was reported using survival analysis.

Results

We treated 67 cases of CAM and found an incidence of 13.6 cases per 1,000 patients post-moderate to severe COVID-19. Uncontrolled diabetes (90%) with ketoacidosis (40%) and prior systemic steroids (84%) were the strongest predispositions. The onset of CAM was 15.1 ± 9.5 days (range: 6-42 days) after recovery from COVID-19. The cumulative probability of an adverse outcome was 38% (95% confidence intervals [CI] = 23.7-56.9%) on day 20. The patients who required NIV during COVID-19 were at seven times higher risk of experiencing an adverse outcome (hazard ratios [HR] = 6.92, 95% CI = 2.9-16.2) while those who received amphotericin- -B had a 61% lower risk (HR = 0.39, 95% CI = 0.16-0.97).

Conclusion

The current outbreak of CAM was seen predominantly in uncontrolled diabetics, especially with ketoacidosis and steroid intake. The cumulative probability of death or orbital exenteration was 38% at day 20 of the infection and those who required NIV and did not receive amphotericin-B were at a high risk of these outcomes.

Mucormycosis in COVID-19 patients

Mucormycosis, commonly known as ‘Black Fungus’ which was then a rare fungal infection, has suddenly come to light post the COVID-19- pandemic, more so during the second wave in India. It thus becomes important not only for the medical fraternity but also the general population to build awareness about the same. The present review will focus on the pathophysiology, etiology, outcomes of some case studies, and current treatment methods of mucormycosis infection. Major focus of the current article is on rhino-orbital-cerebral mucormycosis. All the studies included in the present review article was extracted from the PubMed database.

Concurrent and Post COVID-19 Ophthalmological Implications

Background and Aim

COVID-19 infection is a respiratory disease but it can have ophthalmological manifestations as well. This study aimed to investigate the ophthalmological implications of COVID-19 either during the course of the disease or after recovery.

Methods

A retrospective study included the records of 425 COVID-19 patients, proved by positive PCR swabs. The records were collected from three isolation hospitals in Gharbeya Governorate, Egypt.

Results

The mean age of the studied group was 41.73 ± 13.59, and 216 (50.8%) of them were males. One hundred and thirty one (30.8%) patients had ophthalmological manifestations. Among the entire patients, the most common ophthalmological presentation was conjunctivitis in 111 patients (26.1%), followed by neuro-retinal affection in 9 (2.1%), secondary fungal orbital cellulitis in 6 (1.4%), episcleritis in 3 (0.7%) and keratitis in 2 (0.5%) patients. All of the observed ophthalmological implications occurred either during the course of the disease (concurrent) or after recovery, except for the fungal orbital cellulitis which occurred only after recovery.

Conclusion

COVID-19 could cause different eye manifestations. Recovery from the main disease does not guarantee eye safety, especially in high-risk patients.

COVID-19: Update on Its Ocular Involvements, and Complications From Its Treatments and Vaccinations

ABSTRACT

The coronavirus disease 2019 (COVID-19) came under the attention of the international medical community when China first notified the World Health Organization of a pneumonia outbreak of then-unknown etiology in Wuhan in December 2019. Since then, COVID-19 caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has appalled the world by spreading at a pandemic speed. Although ophthalmologists do not directly engage in the clinical care of COVID-19 patients, the ophthalmology community has become aware of the close ties between its practice and the pandemic. Not only are ophthalmologists at heightened risk of SARS-CoV-2 exposure due to their physical proximity with patients in routine ophthalmic examinations, but SARS-CoV-2 possesses ocular tropism resulting in ocular complications beyond the respiratory tract after viral exposure. Furthermore, patients could potentially suffer from adverse ocular effects in the therapeutic process. This review summarized the latest literature to cover the ophthalmic manifestations, effects of treatments, and vaccinations on the eye to aid the frontline clinicians in providing effective ophthalmic care to COVID-19 patients as the pandemic continues to evolve.

COVID-19-associated mucormycosis: Case report and systematic review

BACKGROUND

Increasing number of patients with COVID-19-associated mucormycosis have been reported, especially from India recently. We have described a patient with COVID-19-associated mucormycosis and, searched and analyzed current medical literature to delineate the characteristics of COVID-19-associated mucormycosis.

METHOD

We reported a patient developed mucormycosis during post-COVID period. We searched literature to describe the incidence, clinical features, and outcomes of COVID-19-associated mucormycosis. Demographic features, risk factors, clinical features, diagnostic methods, treatment and outcome were analyzed.

RESULTS

We describe a 54-year-old male, hospitalized due to severe COVID-19 pneumonia. He was given long-term, high doses of systemic steroids. He developed maxillo-fascial mucormycosis and died of sepsis. Our literature search found 30 publications describing 100 patients including present case report. The majority (n = 68) were reported from India. 76% were male. The most commonly seen risk factors were corticosteroid use (90.5%), diabetes (79%), and hypertension (34%). Also, excessive use of broad-spectrum antibiotics were noted in cases. Most frequent involvements were rhino-orbital (50%), followed by rhino-sinusal (17%), and rhino-orbito-cerebral (15%). Death was reported as 33 out of 99 patients (33,3%).

CONCLUSIONS

Steroid use, diabetes, environmental conditions, excessive use of antibiotics, and hypoxia are main risk factors. Despite medical and surgical treatment, mortality rate is high. A multidisciplinary approach is essential to improve the conditions facilitating the emergence of COVID-19-associated mucormycosis.

Invasive Fungal Infections Complicating COVID-19: A Narrative Review

Invasive fungal infections (IFIs) can complicate the clinical course of COVID-19 and are associated with a significant increase in mortality, especially in critically ill patients admitted to an intensive care unit (ICU). This narrative review concerns 4099 cases of IFIs in 58,784 COVID-19 patients involved in 168 studies. COVID-19-associated invasive pulmonary aspergillosis (CAPA) is a diagnostic challenge because its non-specific clinical/imaging features and the fact that the proposed clinically diagnostic algorithms do not really apply to COVID-19 patients. Forty-seven observational studies and 41 case reports have described a total of 478 CAPA cases that were mainly diagnosed on the basis of cultured respiratory specimens and/or biomarkers/molecular biology, usually without histopathological confirmation. Candidemia is a widely described secondary infection in critically ill patients undergoing prolonged hospitalisation, and the case reports and observational studies of 401 cases indicate high crude mortality rates of 56.1% and 74.8%, respectively. COVID-19 patients are often characterised by the presence of known risk factors for candidemia such as in-dwelling vascular catheters, mechanical ventilation, and broad-spectrum antibiotics. We also describe 3185 cases of mucormycosis (including 1549 cases of rhino-orbital mucormycosis (48.6%)), for which the main risk factor is a history of poorly controlled diabetes mellitus (>76%). Its diagnosis involves a histopathological examination of tissue biopsies, and its treatment requires anti-fungal therapy combined with aggressive surgical resection/debridement, but crude mortality rates are again high: 50.8% in case reports and 16% in observational studies. The presence of other secondary IFIs usually diagnosed in severely immunocompromised patients show that SARS-CoV-2 is capable of stunning the host immune system: 20 cases of Pneumocystis jirovecii pneumonia, 5 cases of cryptococcosis, 4 cases of histoplasmosis, 1 case of coccidioides infection, 1 case of pulmonary infection due to Fusarium spp., and 1 case of pulmonary infection due to Scedosporium.

COVID-19-Associated Mucormycosis (CAM): Case-Series and Global Analysis of Mortality Risk Factors

BACKGROUND

Since the novel coronavirus disease (COVID-19) outbreak, the cases of COVID-19 co-infections have been increasingly reported worldwide. Mucormycosis, an opportunistic fungal infection caused by members of the Mucorales order, had been frequently isolated in severely and critically ill COVID-19 patients.

METHODS

Initially, the anamnestic, clinical, and paraclinical features of seven COVID-19-associated mucormycosis (CAM) cases from Egypt were thoroughly reported. Subsequently, an extensive review of the literature was carried out to describe the characteristics of CAM cases globally, aiming to explore the potential risk factors of mortality in CAM patients.

RESULTS

Out of the seven reported patients in the case series, five (71.4%) were males, six (85.7%) had diabetes mellitus, and three (42.9%) had cardiovascular disease. All patients exhibited various forms of facial deformities under the computed tomography scanning, and two of them tested positive for Mucorales using the polymerase chain reaction (PCR) testing. Liposomal amphotericin B (LAmB) was prescribed to all cases, and none of them died until the end of the follow-up. On reviewing the literature, 191 cases were reported worldwide, of which 74.4% were males, 83.2% were from low-middle income countries, and 51.4% were aged 55 years old or below. Diabetes mellitus (79.1%), chronic hypertension (30%), and renal disease/failure (13.6%) were the most common medical comorbidities, while steroids (64.5%) were the most frequently prescribed medication for COVID-19, followed by Remdesivir (18.2%), antibiotics (12.7%), and Tocilizumab (5.5%).

CONCLUSIONS

As the majority of the included studies were observational studies, the obtained evidence needs to be interpreted carefully. Diabetes, steroids, and Remdesivir were not associated with increased mortality risk, thus confirming that steroids used to manage severe and critical COVID-19 patients should not be discontinued. Lung involvement, bilateral manifestation, and Rhizopus isolation were associated with increased mortality risk, thus confirming that proactive screening is imperative, especially for critically ill patients. Finally, surgical management and antimycotic medications, e.g., amphotericin B and posaconazole, were associated with decreased mortality risk, thus confirming their effectiveness.

Black fungus immunosuppressive epidemic with Covid-19 associated mucormycosis (zygomycosis): a clinical and diagnostic perspective from India

The catastrophic phase of Covid-19 turns the table over with the spread of its disastrous transmission network throughout the world. Covid-19 associated with mucormycosis fungal infection accompanied by opportunistic comorbidities have emerged the myriad of complications and manifestations. We searched the electronic databases of Google Scholar, PubMed, Springer, and Elsevier until June 05, 2021, using keywords. We retrieved the details of confirmed and suspected mucormycosis patients associated with Covid-19. We analyzed the case reports, treatment given for Covid-19, steroids used, associated comorbidities, mucormycosis site involved, and patients survived or dead. Overall, 102 patients of mucormycosis associated with Covid-19 have been reported from India. Mucormycosis was predominant in males (69.6%) rather than females (19.6%), and most of the patients were active Covid-19 cases (70.5%). Steroids were mostly used (68.6%) for the treatment of Covid-19 followed by remdesivir (10.7%). Patients were suffering from diabetes mellitus (88.2%) and severe diabetic ketoacidosis (11.7%). Mucormycosis affects the sino-nasal (72.5%), orbit (24.5%), central nervous system (18.6%), and maxillary necrosis (13.7%) of the patients. The Mortality rate was recorded as 23.5%, and recovery rate was 2.9%. Diabetes mellitus cases are highest in India as compared to other countries, and prevalent use of steroids with the background of Covid-19 becomes an opportunistic environment for mucormycosis fungal infection to survive.

Mucormycosis: An opportunistic pathogen during COVID-19

The pandemic of coronavirus disease 2019 (COVID-19) still remains on an upsurge trend. The second wave of this disease has led to panic in many countries, including India and some parts of the world suffering from the third wave. As there are no proper treatment options or remedies available for this deadly infection, supportive care equipment's such as oxygen cylinders, ventilators and heavy use of steroids play a vital role in the management of COVID-19. In the midst of this pandemic, the COVID-19 patients are acquiring secondary infections such as mucormycosis also known as black fungus disease. Mucormycosis is a serious, but rare opportunistic fungal infection that spreads rapidly, and hence prompt diagnosis and treatment are necessary to avoid high rate of mortality and morbidity rates. Mucormycosis is caused by the inhalation of its filamentous (hyphal form) fungi especially in the patients who are immunosuppressed. Recent studies have documented alarming number of COVID-19 patients with mucormycosis infection. Most of these patients had diabetes and were administered steroids for Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) infection and were consequently more prone to mucormycosis. Hence, the present review emphasizes mucormycosis and its related conditions, its mechanism in normal and COVID-19 affected individuals, influencing factors and challenges to overcome this black mold infection. Early identification and further investigation of this fungus will significantly reduce the severity of the disease and mortality rate in COVID-19 affected patients.

COVID-19-Associated Mucormycosis (CAM): An Updated Evidence Mapping

Mucormycosis, a serious and rare fungal infection, has recently been reported in COVID-19 patients worldwide. This study aims to map all the emerging evidence on the COVID-19-associated mucormycosis (CAM) with a special focus on clinical presentation, treatment modalities, and patient outcomes. An extensive literature search was performed in MEDLINE (Ovid), Embase (Ovid), Cochrane COVID-19 Study Register, and WHO COVID-19 database till 9 June 2021. The primary outcome was to summarize the clinical presentation, treatment modalities, and patient outcomes of CAM. Data were summarized using descriptive statistics and presented in tabular form. This evidence mapping was based on a total of 167 CAM patients with a mean age of 51 ± 14.62 years, and 56.28% of them were male. Diabetes mellitus (73.65% (n = 123)), hypertension (22.75% (n = 38)), and renal failure (10.77% (n = 18)) were the most common co-morbidities among CAM patients. The most common symptoms observed in CAM patients were facial pain, ptosis, proptosis, visual acuity, and vision loss. Survival was higher in patients who underwent both medical and surgical management (64.96%). Overall mortality among CAM patients was found to be 38.32%. In conclusion, this study found a high incidence of CAM with a high mortality rate. Optimal glycemic control and early identification of mucormycosis should be the priority to reduce the morbidity and mortality related to CAM.

A systematic review on SARS-CoV-2-associated fungal coinfections

A severe pandemic of Coronavirus Disease (COVID‐19) has been sweeping the globe since 2019, and this time, it did not stop, with frequent mutations transforming into virulent strains, for instance, B.1.1.7, B.1.351, and B.1.427. In recent months, a fungal infection, mucormycosis has emerged with more fatal responses and significantly increased mortality rate. To measure the severity and potential alternative approaches against black fungus coinfection in COVID‐19 patients, PubMed, Google Scholar, World Health Organization (WHO) newsletters, and other online resources, based on the cases reported and retrospective observational analysis were searched from the years 2015–2021. The studies reporting mucormycosis with Severe Acute Respiratory Syndrome Coronavirus 2 (SARS‐CoV‐2) coinfection and/or demonstrating potential risk factors, such as a history of diabetes mellitus or suppressed immune system were included, and reports published in non‐English language were excluded. More than 20 case reports and observational studies on black fungus coinfection in COVID‐19 patients were eligible for inclusion. The results indicated that diabetes mellitus, hyperglycemic, and immunocompromised COVID‐19 patients with mucormycosis were at a higher risk. We found that it was prudent to assess the potential risk factors and severity of invasive mycosis via standardized diagnostic and clinical settings. Large‐scale studies need to be conducted to identify early biomarkers and optimization of diagnostic methods has to be established per population and geographical variation. This will not only help clinicians around the world to detect the coinfection in time but also will prepare them for future outbreaks of other potential pandemics.

Observational studies and case reports of Post‐COVID black fungus co‐infection highlighted in review.

Along with risk factors, radiological interventions of black fungus co‐infection in COVID‐19 patients and challenges for accurate diagnosis were elaborated.

The review discusses interconnection between fungus and SARS‐CoV‐2 co‐infection of mechanism to identify potential biomarkers.

Our conclusion will contribute to motivate researchers to design follow‐up plans for black fungus infection in COVID‐19.

Early Surgical Intervention Followed by Antifungals in Rhino-Orbital Mucormycosis in Patients With COVID-19 Favors Clinical Outcome: A Case Series

Mucormycosis is an invasive fungal infection occurring in patients with or without preexisting medical illnesses. During the ongoing coronavirus disease 2019 (COVID-19) pandemic, there have been increasing reports of bacterial and fungal coinfections among some COVID-19 patients with preexisting comorbid illnesses such as diabetes and hypertension, with mucormycosis being one of them. The management of this dreaded fungal infection demands early and prompt surgical intervention to thoroughly remove the infected tissue and necrotic material to reduce the tissue burden of this invasive organism. This should be accompanied by expeditious initiation of amphotericin B along with supportive therapy. Here we present five cases of rhino-orbital mucormycosis in patients with COVID-19, all of whom presented with orbital and facial swelling (three had symptoms of impending blindness) under the backdrop of COVID-19 symptoms in the form of intermittent fever and slight dyspnea. Our treatment strategy comprised an expeditious use of early surgical intervention and amphotericin B along with the control of cytokine storm and hyperglycemia. This treatment strategy eventually resulted in an improved clinical outcome.

COVID-19 Associated Mucormycosis: A Systematic Review from Diagnostic Challenges to Management

The coronavirus disease 2019 (COVID-19) outbreak has caused significant destruction, claiming over three million lives worldwide. Post SARS-COV-2 invasion, immunosuppression with hyperglycemia and elevated ferritin levels along with steroidal treatment creates a perfect storm for opportunistic infections. There is increasing evidence of mucormycosis co-infection in COVID-19 patients, during or post-treatment. A worse prognosis, a late diagnosis, and limited guidelines of screening and management of COVID-19 associated mucormycosis have made healthcare professionals fear an epidemic alongside a pandemic. This review geographically reports cases of COVID-19 associated mucormycosis (CAM), evaluates characteristics, clinical manifestations, and outcomes of mucormycosis in COVID-19 active or recovered patients. It further describes preventive strategies and recommendations for optimal management therapy that can be adopted worldwide to curtail an impending threat to the healthcare system.

Rhino-Orbital Mucormycosis in a COVID-19 Patient Co-Infected With Klebsiella Pneumoniae

We present a case of a 34-year-old male with coronavirus disease 2019 (COVID-19) and uncontrolled blood sugar with right orbital cellulitis and right ethmoidal and maxillary sinusitis. Histopathology of a middle meatus tissue biopsy collected via diagnostic nasal endoscopy (DNE) revealed the presence of Mucor and Klebsiella pneumoniae (K. pneumoniae). After the administration of intravenous (IV) insulin, cefoperazone-sulbactam, and posaconazole (due to the non-availability of amphotericin B), he underwent surgical debridement and functional endoscopic sinus surgery (FESS). After being on antibiotics and antifungals for two weeks post-surgery, the patient had a favorable outcome and further tests revealed improved blood counts and inflammatory markers.

A case report of rhino-facial mucormycosis in a non-diabetic patient with COVID-19: a systematic review of literature and current update

BACKGROUND

COVID-19 disease may be associated with a wide range of bacterial and fungal infections. We report a patient with COVID-19 infection who developed rhino-facial mucormycosis during treatment with corticosteroids.

CASE PRESENTATION

A 59-year-old non-diabetic male patient was admitted with a diagnosis of COVID-19 based on positive RT-PCR and CT of the lungs. Due to sever lung involvement, he was treated with methylprednisolone. The patient was re-admitted to hospital, due to nasal obstruction and left side facial and orbital swelling, several days after discharge. In sinus endoscopic surgery, debridement was performed and the specimens were sent to pathology and mycology laboratories. A nasal biopsy showed wide hyphae without septa. The sequenced PCR product revealed Rhizopus oryzae. Despite all medical and surgical treatment, the patient died. In addition, the characteristics of patients with COVID-19-associated mucormycosis were reviewed in 44 available literatures. In most studies, diabetes mellitus was the most common predisposing factor for mucormycosis.

CONCLUSION

Our report highlights the need for assessing the presence of mucormycosis in patients with COVID-19 and also it shows that physicians should consider the potential for secondary invasive fungal infections in COVID-19 cases.

Overview on the Prevalence of Fungal Infections, Immune Response, and Microbiome Role in COVID-19 Patients

Patients with severe COVID-19, such as individuals in intensive care units (ICU), are exceptionally susceptible to bacterial and fungal infections. The most prevalent fungal infections are aspergillosis and candidemia. Nonetheless, other fungal species (for instance, Histoplasma spp., Rhizopus spp., Mucor spp., Cryptococcus spp.) have recently been increasingly linked to opportunistic fungal diseases in COVID-19 patients. These fungal co-infections are described with rising incidence, severe illness, and death that is associated with host immune response. Awareness of the high risks of the occurrence of fungal co-infections is crucial to downgrade any arrear in diagnosis and treatment to support the prevention of severe illness and death directly related to these infections. This review analyses the fungal infections, treatments, outcome, and immune response, considering the possible role of the microbiome in these patients. The search was performed in Medline (PubMed), using the words "fungal infections COVID-19", between 2020-2021.

Rising concerns of Mucormycosis (Zygomycosis) among COVID-19 patients; an analysis and review based on case reports in literature

As the world continues to struggle with the pandemic of COVID-19 (coronavirus disease 2019), several cases of mucormycosis have been reported in these patients with a high mortality rate. We conducted a review of literature and found 19 articles with 20 patients who developed mucormycosis during their COVID-19 infection.14 (70%) were males, and 6(30%) were females. While their mean age was 52.2 ± 17.3 years, affected men were older than females. Ten (50%) patients also had diabetes. Common clinical findings included ophthalmologic complaints, fever, shortness of breath, and facial pain. Amphotericin B was the most common antifungal used and around 40% of cases needed surgical management of the infection. Steroid use was reported in around 12 cases (60%). Unfortunately, the mortality rate was 65% in this group of patients. Several changes in care should be brought for a consistent prevention, early diagnosis, and strong management of mucormycosis in COVID-19 patients.

New-onset hyperglycaemia and prolonged systemic corticosteroids therapy in mild COVID-19 patients as major risk factors for invasive mucormycosis: a preliminary study

Background and Purpose

Rapid surge of invasive mucormycosis has surprised the Indian healthcare system amidst the coronavirus disease-19 (COVID-19) pandemic. Hence, there is an urgent need to find the risk factors for the sudden rise in cases of invasive mucormycosis among COVID-19 patients. This study aimed to find crucial risk factors for the sudden surge of invasive mucormycosis in India.

Materials and Methods

This case-control study included 77 cases of COVID-19 associated mucormycosis (CAM) who matched the controls (45 controls) in terms of age , gender, and COVID-19 disease severity. The control group included subjects that matched controls without mucormycosis confirmed by reverse transcription-polymerase chain reaction at our tertiary care center during April-May 2021. Probable predisposing factors, such as duration of diabetes mellitus (DM), history of recent hospitalization, duration of hospital stay, mode of the received oxygen supplementation, and use of steroids, zinc, vitamin c, and any other specific drugs were collected and compared between the two groups. Moreover, the laboratory parameters, like glycated hemoglobin (HbA1c), highly sensitive C-reactive protein (hs-CRP), and erythrocyte sedimentation rate (ESR) were analyzed to find out the significant association with CAM.

Results

DM (Odds ratio=7.7, 95% CI 3.30-18.12; P=<0.0001) and high glycated hemoglobin level (HbA1c>7.5 gm %) (odds ratio=6.2, 95% CI 1.4-26.7; P=0.014) were significant risk factors for the development of invasive mucormycosis among the COVID-19 cases. A higher number of mild COVID-19 cases developed CAM, compared to the moderate to severe cases (59.7% vs 40.3%). Use of systemic corticosteroids (odd ratio=5 with 95% CI 1.5-16.9; P=0.007) was found to be a risk factor for invasive mucormycosis only in mild COVID-19 cases. Use of oxygen, zinc, and vitamin C supplementation, and proprietary medicine did not lead to a significant risk of invasive mucormycosis in cases, compared to controls. Cases with invasive mucormycosis had a higher level of inflammatory markers (hs-CRP and ESR, P=<0.001 and 0.002, respectively), compared to the controls.

Conclusion

Uncontrolled and new-onset DM and the use of systemic corticosteroids in mild cases were significantly associated with a higher risk of invasive mucormycosis in COVID-19 cases. There should be a strong recommendation against the use of systemic corticosteroids in mild COVID-19 cases.

COVID-19 and mucormycosis superinfection: Exploring the missing pathophysiological links

The coronavirus disease 2019 continues to unearth new facets that portend grave clinical implications. In recent times, there has been mounting fervor regarding coronavirus disease 2019 and mucormycosis superinfection. While the correlation between the two is conspicuous, the underlying pathophysiological mechanisms that render a patient with coronavirus disease 2019 susceptible to mucormycosis, or vice versa, are still elusive.

Post-COVID-19 rhino-orbito-cerebral mucormycosis: a new addition to challenges in pandemic control

Objective

To document and analyse demographic data, clinical presentation, possible interventions for early clinical detection and management of post-COVID-19 rhino-orbito-cerebral mucormycosis (ROCM).

Method

32 patients having history of SARS-CoV-2 infection with features of ROCM were observed in terms of their history, presenting features, clinical, microbiological examination, type of surgical intervention, surgical sites of involvement which were subsequently analyzed.

Results

The mean (± S.D.) age of patients was 57 ± 13 years. All patients were diabetic. Mean (± S.D.) time of onset of ROCM symptoms, since onset of COVID-19 symptoms was 18 (± 4) days. 12.5% patients were fully vaccinated. 78.1% patients received steroid therapy; 28.1% received high flow nasal oxygen. 87.5% patients had blurring of vision, 65.62% headache, 59.37% cheek and eyelid swelling, 50% proptosis, 46.87% ophthalmoplegia, 40.62% ptosis, 40.62% loss of sensation over cheek, 25% orbital pain. Examination of specimen with KOH mount revealed Mucor spp. in all patients. 87.5% patients underwent endoscopic sinus surgery with debridement with/without orbital clearance; 56.25% maxillectomy; 25% orbital exenteration. 87.5% patients had paranasal sinus involvement, 43.75% orbit sparing orbital apex, 68.75% orbit with orbital apex. 81.25% patients had involvement of pterygopalatine fossa±infratemporal fossa. 50% patients had disease in Vidian canal and pterygoid wedge. 25% of patients had involvement of palate and 56.25% cheek and eyelid soft tissues.

Conclusion

A judicious COVID treatment protocol, high index of suspicion, close monitoring of high-risk patients and early institution of treatment can prevent case severity and reduce mortality.

COVID-19 and mucormycosis superinfection: the perfect storm

BACKGROUND

The recent emergence of the Coronavirus Disease (COVID-19) disease had been associated with reports of fungal infections such as aspergillosis and mucormycosis especially among critically ill patients treated with steroids. The recent surge in cases of COVID-19 in India during the second wave of the pandemic had been associated with increased reporting of invasive mucormycosis post COVID-19. There are multiple case reports and case series describing mucormycosis in COVID-19.

PURPOSE

In this review, we included most recent reported case reports and case-series of mucormycosis among patients with COVID-19 and describe the clinical features and outcome.

RESULTS

Many  of the mucormycosis reports were eported from India, especially in COVID-19 patients who were treated and recovered patients. The most commonly reported infection sites were rhino-orbital/rhino-cerebral mucormycosis. Those patients  were diabetic and had corticosteroids therapy for controlling the severity of COVID-19, leading to a higher fatality in such cases and complicating the pandemic scenario. The triad of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), corticosteroid use and uncontrolled diabetes mellitus have been evident for significant increase in the incidence of angioinvasive maxillofacial mucormycosis.  In addition, the presence of spores and other factors might play a role as well.

CONCLUSION

With the ongoing COVID-19 pandemic and increasing number of critically ill patients infected with SARS-CoV-2, it is important to develop a risk-based approach for patients at risk of mucormycosis based on the epidemiological burden of mucormycosis, prevalence of diabetes mellitus, COVID-19 disease severity and use of immune modulating agents including the combined use of corticosteroids and immunosuppressive agents in patients with cancer and transplants.

Post Covid-19 Infection Presenting as Rhino-Orbital Mycosis

Rhino-orbital mycosis has been recently recognised as one of the sequelae in COVID-19 recovered patients. In India, detection of mucormycosis is declared as notifiable disease. In this article, the authors aim to describe the characteristics of patients presenting with post covid fungal infection which could be detected on 10% potassium hydroxide (KOH) wet mount and Giemsa stain put on crush biopsy smear. We describe 10 COVID-19 recovered patients admitted to ENT department of the hospital during second wave of COVID-19 infection. They presented with post covid fungal sinusitis and ophthalmic complications and planned for surgery. KOH mount and Giemsa stain were used for possible opinion and confirmed by culture. The observations were described in mean and percentages. All ten (100%) COVID-19 recovered patients were previously diagnosed with type 2 diabetes mellitus (DM) for 2-11 years. All 10 patients (100%) were given oral or intravenous corticosteroids for mean of 21 days (3 weeks-till presentation to ENT department). Simple procedures with 10% KOH mount and Giemsa stain could detect fungal hypae in all the cases and could provide possible opinion in 9 of 10 (90%) cases for timely management of the patients. The authors hypothesize that uncontrolled DM and prolonged use of corticosteroids may act as culprits of rhino-orbital mycosis in COVID-19 recovered patients. Simple and routine 10% KOH mount and Giemsa stain may provide early opinion of fungal hypae to ensure quick management and survival of the patients.

Mucormycosis and COVID-19: An epidemic within a pandemic in India

Importance

Coronavirus disease (COVID‐19) causes an immunosuppressed state and increases risk of secondary infections like mucormycosis. We evaluated clinical features, predisposing factors, diagnosis and outcomes for mucormycosis among patients with COVID‐19 infection.

Methods

This prospective, observational, multi‐centre study included 47 consecutive patients with mucormycosis, diagnosed during their course of COVID‐19 illness, between January 3 and March 27, 2021. Data regarding demography, underlying medical conditions, COVID‐19 illness and treatment were collected. Clinical presentations of mucormycosis, imaging and biochemical characteristics and outcome were recorded.

Results

Of the 2567 COVID‐19 patients admitted to 3 tertiary centres, 47 (1.8%) were diagnosed with mucormycosis. Mean age was 55 ± 12.8years, and majority suffered from diabetes mellitus (n = 36, 76.6%). Most were not COVID‐19 vaccinated (n = 31, 66.0%) and majority (n = 43, 91.5%) had developed moderate‐to‐severe pneumonia, while 20 (42.6%) required invasive ventilation. All patients had received corticosteroids and broad‐spectrum antibiotics while most (n = 37, 78.7%) received at least one anti‐viral medication. Mean time elapsed from COVID‐19 diagnosis to mucormycosis was 12.1 ± 4.6days. Eleven (23.4%) subjects succumbed to their disease, mostly (n = 8, 72.7%) within 7 days of diagnosis. Among the patients who died, 10 (90.9%) had pre‐existing diabetes mellitus, only 2 (18.2%) had received just one vaccine dose and all developed moderate‐to‐severe pneumonia, requiring oxygen supplementation and mechanical ventilation.

Conclusions

Mucormycosis can occur among COVID‐19 patients, especially with poor glycaemic control, widespread and injudicious use of corticosteroids and broad‐spectrum antibiotics, and invasive ventilation. Owing to the high mortality, high index of suspicion is required to ensure timely diagnosis and appropriate treatment in high‐risk populations.

Coronavirus Disease-Associated Mucormycosis from a Tertiary Care Hospital in India: A Case Series

BACKGROUND

 Coronavirus disease (COVID-19) remains a health concern with new challenges emerging as the pandemic progresses. The recent rise of opportunistic infections especially mucormycosis in COVID-19 patients is further complicating their outcomes. Mucormycosis is well known to infect patients with diabetes mellitus, malignancy, chemotherapy, and other immunocompromised conditions. The treatment of COVID-19 largely remains systemic steroids and other immunomodulators that add to the risk of invasive fungal infection.

METHODOLOGY

Here, we present a retrospective case series of 13 patients with individual clinical characteristics along with the demography and treatment details. The data were collected retrospectively in a single center that caters to a large population of COVID-19 patients with varying severity.

RESULTS

Thirteen patients were presented with COVID-19 associated mucormycosis (CAM). The median age was higher in non-survivors (49.5 years), with a higher odds of death (23.8) in those with severe COVID, having overall mortality of 64.3%. Moreover, diabetes mellitus was present in 61.5% of patients with a mortality of 75%. About 11 (84.6%) patients had received prior steroids for COVID-19. The incidence of hyperglycemia at admission was equal among both survivors and non-survivors.

CONCLUSION

The prevalence of mucormycosis seems to be increasing among COVID-19 patients which may be associated with increased use of steroids, the possible immunocompromised state imposed by SARS-CoV-2, or co-existing conditions such as diabetes mellitus. The mortality of CAM is remarkably high and apart from preventive practices and rational use of immunomodulators, a high index of suspicion with early diagnosis would be key to survival.

Mucormycosis in COVID-19: A systematic review of cases reported worldwide and in India

BACKGROUND AND AIMS

There are increasing case reports of rhino-orbital mucormycosis in people with coronavirus disease 2019 (COVID-19), especially from India. Diabetes mellitus (DM) is an independent risk factor for both severe COVID-19 and mucormycosis. We aim to conduct a systematic review of literature to find out the patient's characteristics having mucormycosis and COVID-19.

METHODS

We searched the electronic database of PubMed and Google Scholar from inception until May 13, 2021 using keywords. We retrieved all the granular details of case reports/series of patients with mucormycosis, and COVID-19 reported world-wide. Subsequently we analyzed the patient characteristics, associated comorbidities, location of mucormycosis, use of steroids and its outcome in people with COVID-19.

RESULTS

Overall, 101 cases of mucormycosis in people with COVID-19 have been reported, of which 82 cases were from India and 19 from the rest of the world. Mucormycosis was predominantly seen in males (78.9%), both in people who were active (59.4%) or recovered (40.6%) from COVID-19. Pre-existing diabetes mellitus (DM) was present in 80% of cases, while concomitant diabetic ketoacidosis (DKA) was present in 14.9%. Corticosteroid intake for the treatment of COVID-19 was recorded in 76.3% of cases. Mucormycosis involving nose and sinuses (88.9%) was most common followed by rhino-orbital (56.7%). Mortality was noted in 30.7% of the cases.

CONCLUSION

An unholy trinity of diabetes, rampant use of corticosteroid in a background of COVID-19 appears to increase mucormycosis. All efforts should be made to maintain optimal glucose and only judicious use of corticosteroids in patients with COVID-19.