COVID-19-associated mucormycosis - "The Black fungus" with associated invasive aspergillosis and actinomycosis infection: Series of 5 cases in the Indian scenario.

COVID-19 caused by SARS-CoV-2 has been studied and reported widely since November 2019, after its first case was detected in Wuhan, China. It has proven to be a fatal disease worldwide. COVID-19 causes severe disease in patients with immunosuppression and has always been associated with high mortality in such patients. Immunocompromised patients are always at a higher risk of getting co-infections too, and the same is true with COVID-19. It predisposes to the development of many fungal infections of which, mucormycosis is one of the most common ones, especially in the Indian population where a large group of the population is predisposed to diabetes mellitus. India has the world's largest population of diabetic patients; therefore, the prevalence of COVID-19-associated mucormycosis (CAM) is also the highest in India. Also, the use of corticosteroids over a long duration of time predisposes the patients to the development of mucormycosis owing to immunosuppression. Hypoxia, low total leukocyte count, and high ferritin are the other predisposing factors that lead to the growth of mucormycosis associated with COVID-19. Here, we present five cases within a span of 2 months, of mucormycosis-associated COVID-19 with mixed infections of aspergillosis and actinomycetes. Four cases had mucormycosis with aspergillosis and one with mucormycosis with Actinomyces. Three patients recovered fully after being treated with intravenous amphotericin B; however, unfortunately, two of our patients could not be saved.