Publications by authors named "Georgios Hamilos"

Background: Vaccination against COVID-19 is among the most effective measures to stop the spread of the disease. However, acceptance of vaccination against COVID-19 among HCWs has not been universal and emergence of new variants with increased transmissibility, reduced neutralization by BNT162b2 vaccine-elicited sera and ability to cause breakthrough infections in vaccinated individuals is concerning. The aim of this study was to compare viral load, clinical presentation at diagnosis and type of exposure among vaccinated (with BNT162b2) and non-vaccinated healthcare workers (HCWs).

View Article and Find Full Text PDF

A 54-year-old otherwise healthy male, who was being evaluated for prolonged fever, developed clinical and ultrasonographic signs compatible with acute acalculous cholecystitis. Diagnosis of murine typhus was confirmed by serology and the patient was treated with doxycycline. He improved rapidly and all clinical and laboratory abnormalities returned to normal.

View Article and Find Full Text PDF

Objective: Recent studies have shown that in carefully selected patients, conservative treatment alone can be an option in the management of spinal epidural abscess (SEA). The aim of this study was to identify prognostic factors of outcome in patients with spontaneous SEA treated conservatively.

Patients And Methods: A retrospective cohort study of all patients with spontaneous SEA treated with antibiotics alone from January 2012 to December 2015 was conducted in a 1200-bed tertiary referral center.

View Article and Find Full Text PDF

Candida parapsilosis isolates occasionally display resistance in vitro to echinocandins and cause breakthrough infections to echinocandins. The degree of the in vivo cross-resistance among echinocandins and the fitness loss associated with caspofungin (CAS) resistance of C. parapsilosis are not well studied.

View Article and Find Full Text PDF

Airborne opportunistic fungi, including Aspergillus and other less common saprophytic molds, have recently emerged as important causes of mortality in immunocompromised individuals. Understanding the molecular mechanisms of host-fungal interplay in robust experimental pathosystems is becoming a research priority for development of novel therapeutics to combat these devastating infections. Over the past decade, invertebrate hosts with evolutionarily conserved innate immune signaling pathways and powerful genetics, such as Drosophila melanogaster, have been employed as a means to overcome logistic restrains associated with the use mammalian models of fungal infections.

View Article and Find Full Text PDF

Mucormycosis (formerly zygomycosis) is a life-threatening opportunistic mycosis that infects a broad range of hosts with qualitative or quantitative defects in innate immunity, including patients with severe neutropenia, recipients of corticosteroids or other immunosuppressive medications, poorly controlled diabetes mellitus, and those with iron overload states. Mucormycosis has recently emerged as breakthrough sinopulmonary infection in hematologic patients and recipients of transplantation being on antifungal prophylaxis with Aspergillus-active antifungals that lack activity against Mucorales. Unlike pulmonary aspergillosis, the prognosis and outcome of pulmonary mucormycosis have not improved significantly over the last decade, mainly because of difficulties in early diagnosis and the limited activity of current antifungal agents against Mucorales.

View Article and Find Full Text PDF

Background: Ovarian germ cell tumors (OGCT) are highly curable when treated with cytoreductive surgery and platinum-based chemotherapy. We evaluated the safety and activity of a 3-day modified bleomycin, etoposide, and cisplatinum (mBEP) regimen in patients with OGCT.

Patients And Methods: Patients with FIGO stages I-IV OGCT were treated with three (stages I-III complete resection) or four cycles (incomplete resection or stage IV) of bleomycin 15 mg iv, etoposide 120 mg/m(2) iv, and cisplatin 40 mg/m(2) iv for 3 days every 3 weeks.

View Article and Find Full Text PDF