Abstract
Mucormycosis is an emerging angioinvasive fungal infection caused by ubiquitous saprophytic filamentous fungus that belongs to the class Zygomycosis. Mucormycosis or black fungus infections in patients with recent COVID-19 infections has given rise to a new epidemic during the second wave of this current COVID-19 pandemic in India. Steroid misuse, poor glycemic control, use of industrial grade oxygen, improper humidification and specific variants strains have resulted in profound immunosuppression and are attributed for the high incidence of COVID associated Mucormycosis (CAM) in India. The aims of the present study were to assess the age and gender specific incidence of CAM, the utility of special stains (PAS and GMS) for diagnosing mucormycosis (false negatives and sensitivity). In the present study emphasis was laid on identifying if there exists a correlation between host response, angioinvasion and bone invasion with mortality. The Present study is a retrospective, cross sectional analytical study taken up in the Department of Pathology, Guntur Medical College for a period of 2months between 1st of May 2021 to 30th of June 2021. Results were tabulated in Microsoft excel 2016 and SPSS software version 14 was used for calculation of odds ratio and for performing multivariate analysis. All samples were routinely fixed using 10% buffered formalin, processed and sectioned. All the sections were stained with Haematoxylin and Eosin and also special stains for fungus like periodic acid Schiff (PAS) and Gomori Methenamine silver (GMS) were used wherever required. CAM is a serious complication after recovery from COVID-19 infection due to its high morbidity and mortality (13.7% in this series). CAM epidemiology and presentation is mostly similar to non-COVID mucormycosis seen in pre-COVID era.
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