Geetha Sivasubramanian

Dr. Geetha Sivasubramanian

orcid

Research Focus & Metrics

Academic Career Length

7Years (2020-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
4 June 2021 in Case Reports in Infectious Diseases
Verified
Journal Article
Open access
PDF file
HGHebah Ghanem
Hebah Ghanem
GSGeetha Sivasubramanian
Geetha Sivasubramanian
Cryptococcus neoformans is a saprophytic fungus that causes fatal disseminated infections in immunocompromised hosts. Since the onset of the COVID-19 pandemic, multiple cases of secondary viral, bacterial, and fungal infections have been reported in patients after SARS-CoV-2 infection. We describe here a case of severe cryptococcal meningitis that developed in a previously healthy patient one week after treatment of SARS-CoV-2 infection with dexamethasone. This case adds to the growing knowledge of emerging secondary infectious complications including opportunistic pathogens after SARS-CoV-2 infection. While few reports allude to depressed T-cell function and lymphopenia due to SARS-CoV-2 infection, further studies are needed to evaluate the effects of this infection and its treatment on the immune system and its contribution to the emergence of secondary opportunistic infections.

1 July 2022 in Emerging Infectious Diseases
Verified
Journal Article
Open access
PDF file
JKJani M. Kim
Jani M. Kim
GSGeetha Sivasubramanian
Geetha Sivasubramanian
Widespread use of corticosteroids for COVID-19 treatment has led to Strongyloides reactivation and severe disease in patients from endemic areas. We describe a US patient with COVID-19 and Strongyloides hyperinfection syndrome and review other reported cases. Our findings highlight the need for Strongyloides screening and treatment in high-risk populations.

2 May 2023 in Open Forum Infectious Diseases
Verified
Journal Article
Open access
PDF file
GSGeetha Sivasubramanian
Geetha Sivasubramanian
SKSaurin Kadakia
Saurin Kadakia
JKJani M Kim
Jani M Kim
SPSarah Pervaiz
Sarah Pervaiz
YYYueqi Yan
Yueqi Yan
RLRobert Libke
Robert Libke
Background: Coccidioidal meningitis (CM) is the most severe form of disseminated coccidioidomycosis. Despite years of clinical experience, it remains a difficult condition to treat, often requiring surgical procedures, such as placement of a ventriculoperitoneal shunt, in addition to lifelong antifungal therapy. Methods: We performed a retrospective analysis of patients with CM seen in a large referral center in Central Valley, California, from 2010 to 2020. Data pertinent to CM were collected and analyzed. Results: Among 133 patients with CM identified in the 10-year period, nonadherence to antifungal therapy was noted in 43% of patients. Of the 80 patients who underwent ventriculoperitoneal shunt placement for management of intracranial pressure, shunt failure requiring revision surgery occurred in 42 (52.5%). Rehospitalizations due to CM-related reasons occurred in 78 of 133 patients (59%). Twenty-three percent of patients (n = 29) died due to complications from CM, on an average 22 months after the diagnosis of CM. Encephalopathy at presentation was associated with a significantly higher risk of death. Conclusions: Patients with CM in central California are predominantly rural agricultural workers with elevated levels of poverty and low health literacy and many barriers to care, leading to high rates of medication nonadherence and loss to follow-up outpatient care. Management challenges are frequent, such as failure of antifungal therapy, high rates of rehospitalization, and the need for repeated shunt revision surgeries. In addition to the development of curative new antifungal agents, understanding the barriers to patient adherence to care and antifungal therapy and identifying means to overcome such barriers are of paramount importance.

1 November 2022 in Cureus
Verified
Journal Article
Open access
JLJoanne Lin
Joanne Lin
GSGeetha Sivasubramanian
Geetha Sivasubramanian
Primary infection with Epstein-Barr virus (EBV) is very common, often manifesting as mononucleosis syndrome with fatigue, sore throat, fever, and enlarged lymph nodes. Liver involvement occurs in many cases with mildly elevated liver enzymes. However, it is rare to see EBV infection present as cholestatic hepatitis. Another rare complication of primary EBV infection is hemophagocytic lymphohistiocytosis (HLH). We describe a patient with primary EBV infection who presented with fatigue and jaundice, subsequent rash, and reactive lymphocytosis. The patient was noted to have cholestatic hepatitis and was highly suspected to have HLH based on laboratory values, including elevated ferritin, triglyceride, and interleukin-2 levels. He showed clinical improvement with HLH treatment using dexamethasone, etoposide, and rituximab. We further review the clinical manifestations, pathogenesis, and management of EBV-associated cholestatic hepatitis and EBV-HLH. Early diagnosis of primary EBV infection is emphasized in order to properly recognize and treat potentially life-threatening complications.

10 November 2021 in Journal of Fungi
Verified
Journal Article
Open access
PDF file
GSGeetha Sivasubramanian
Geetha Sivasubramanian
HGHebah Ghanem
Hebah Ghanem
MMMichele Maison-Fomotar
Michele Maison-Fomotar
RJRatnali Jain
Ratnali Jain
RLRobert Libke
Robert Libke
Reports of coronavirus disease 2019 (COVID-19)-associated pulmonary aspergillosis (CAPA) have been widely published across the world since the onset of the pandemic with varying incidence rates. We retrospectively studied all patients with severe COVID-19 infection who were admitted to our tertiary care center′s intensive care units between January 2020 and March 2021, who also had respiratory cultures positive for Aspergillus species. Among a large cohort of 970 patients admitted to the ICU with severe COVID-19 infections during our study period, 48 patients had Aspergillus species growing in respiratory cultures. Based on the 2020 European Confederation of Medical Mycology and the International Society for Human and Animal Mycology (ECMM/ISHAM) consensus criteria, 2 patients in the study had proven CAPA, 9 had probable CAPA, and 37 had possible CAPA. The incidence of CAPA was 5%. The mean duration from a positive COVID-19 test to Aspergillus spp. being recovered from the respiratory cultures was 16 days, and more than half of the patients had preceding fever or worsening respiratory failure despite adequate support and management. Antifungals were given for treatment in 44% of the patients for a mean duration of 13 days. The overall mortality rate in our study population was extremely high with death occurring in 40/48 patients (83%).

22 April 2021 in IDCases
Verified
Journal Article
Open access
GSGeetha Sivasubramanian
Geetha Sivasubramanian
Clostridium species are known to cause myonecrosis and gas gangrene which are often fatal infections in the setting of trauma but also spontaneously in certain populations such as colorectal malignancy, immunosuppression, and neutropenia. We report a case of an 83-year-old male who developed fatal and rapidly progressive gas gangrene due to Clostridium septicum within 48 h after biopsy of suspected malignant cecal mass. To our knowledge, such a drastic, rapid and fatal presentation after a diagnostic biopsy of malignant mass has not been previously reported and is something to be watchful for in suspected colon cancer cases.