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This phase 3 observer-blind, randomized, controlled study was conducted in adults ≥18 years of age to assess the safety and immunogenicity of NVX-CoV2373 as a heterologous booster compared to BBIBP-CorV when utilized as a homologous booster. Approximately 1000 participants were randomly assigned in a 1:1 ratio to receive a single dose of NVX-CoV2373 or BBIBP-CorV after prior vaccination with 2 or 3 doses of BBIBP-CorV. Solicited adverse events (AEs) were collected for 7 days after vaccination. Unsolicited AEs were collected for 28 days following the booster dose and serious adverse and adverse events of special interest (AESI) were collected throughout the study. Anti-spike IgG and neutralizing antibodies against SARS-CoV-2 were measured at baseline, day 14, day 28, and day 180. The study achieved its primary non-inferiority endpoint and also demonstrated statistically higher neutralization responses when NVX-CoV2373 was utilized as a heterologous booster compared with BBIBP-CorV as a homologous booster. Both vaccines had an acceptably low reactogenicity profile, and no new safety concerns were found. Heterologous boosting with NVX-CoV2373 was a highly immunogenic and safe vaccine regimen in those previously vaccinated with BBIBP-CorV., Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: [ST, AMM, BW, RM, and MR are employees and stockholders of Novavax, Inc. SA, SZ, IET, AEB, SEH, NAK, FA, BP-J, and M-FB have no disclosures to report]., (Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)

Purpose: To report the use of intravitreal faricimab used as an adjunct in the management of intraocular tuberculosis (IOTB) in a patient with occlusive retinal vasculitis (ORV) and choroiditis., Methods: A case report., Results: A 27-year-old Asian male presented with bilateral choroiditis and ORV complicated by retinal neovascularization and vitreous hemorrhage in one eye. The patient had a positive tuberculin skin test, indeterminate interferon-gamma release assay, and Ghon's focus on chest radiography. With a diagnosis of IOTB, the patient was treated with anti-tubercular therapy. Due to the significant vitreous hemorrhage, he underwent pars plana vitrectomy in one eye. The patient received bilateral faricimab. Within a week of the injection, he had a near-complete resolution of the extensive choroidal and retinal vascular inflammation., Conclusions: Intravitreal faricimab, given its angiopoietin-2 (ang2) inhibition and anti-vascular endothelial growth factor action, maybe a helpful adjunct in IOTB. Whether ang2 inhibition provides any additional benefit needs further evaluation in extensive studies., Competing Interests: Financial Disclosures: The authors have no financial disclosure/proprietary interest. The authors report no conflicts of interest. The authors alone are responsible for the content and preparation of this manuscript., (Copyright © 2023 The Author(s). Published by Wolters Kluwer Health, Inc. on behalf of the Opthalmic Communications Society, Inc.)

Background: Pulmonary radiological findings of the novel coronavirus disease 2019 (COVID-19) have been well documented and range from scattered ground-glass infiltrates in milder cases to confluent ground-glass change, dense consolidation, and crazy paving in the critically ill. However, lung cavitation has not been commonly described in these patients. The objective of this study was to assess the incidence of pulmonary cavitation in patients with COVID-19 and describe its characteristics and evolution., Methods: We conducted a retrospective review of all patients admitted to our institution with COVID-19 and reviewed electronic medical records and imaging to identify patients who developed pulmonary cavitation., Results: Twelve out of 689 (1.7%) patients admitted to our institution with COVID-19 developed pulmonary cavitation, comprising 3.3% (n = 12/359) of patients who developed COVID-19 pneumonia, and 11% (n = 12/110) of those admitted to the intensive care unit. We describe the imaging characteristics of the cavitation and present the clinical, pharmacological, laboratory, and microbiological parameters for these patients. In this cohort six patients have died, and six discharged home., Conclusion: Cavitary lung disease in patients with severe COVID-19 disease is not uncommon, and is associated with a high level of morbidity and mortality.

Heart transplantation (HT) has become a standard option for patients with end-stage heart failure (HF). However, the scarcity of donor availability remains a major hurdle for receiving this novel therapy, especially in the context of the rapidly spreading severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2; COVID-19) pandemic. We report the case of a patient in the United Arab Emirates (UAE) with advanced HF who was glucose-6-phosphate dehydrogenase deficient and had a history of type 2 diabetes mellitus with diabetic retinopathy and nephropathy, chronic kidney disease stage II, and hyperlipidemia. He was referred for HT abroad and was subsequently caught in the midst of the COVID-19 pandemic in New York, the US state most affected by the crisis at the time. Despite limited experience with favipiravir, we judged it to be the most appropriate agent with this patient's complex history given the lower risk for QT prolongation, no need for renal-dose adjustment, and no reported drug-drug interactions. Given the limited clinical experience with this agent, particularly for our patient, we decided to adopt strategies to mitigate and monitor the potential for QT prolongation. We outline the logistical, clinical, and pharmacological challenges that the poly-morbid patient and our HT program in the Middle-East faced under those novel circumstances., Competing Interests: Conflicts of interestBassam Atallah, Iman Hamour, Saad I. Mallah, Maria-Fernanda Bonilla, and Feras Bader have no conflicts of interest that are directly relevant to the content of this article., (© Springer Nature Switzerland AG 2020.)

Abstract: There are conflicting data regarding the use of hydroxychloroquine (HCQ) in COVID-19 hospitalized patients. The objective of this study was to assess the efficacy of HCQ in increasing SARS-CoV-2 viral clearance.Hospitalized adult patients with confirmed SARS-CoV-2 infection were retrospectively included in the study. The primary outcome was the time from a confirmed positive nasopharyngeal swab to turn negative. A negative nasopharyngeal swab conversion was defined as a confirmed SARS-CoV-2 case followed by 2 negative results using RT-PCR assay with samples obtained 24 hours apart. Multiple linear regression analysis was used to adjust for potential confounders.Thirty-four confirmed COVID-19 patients completed the study. Nineteen (55.9%) patients presented with symptoms, and 14 (41.2%) had pneumonia. Only 21 (61.8%) patients received HCQ. The time to SARS-CoV-2 negativity nasopharyngeal test was significantly longer in patients who received HCQ than those who did not receive HCQ [17 (13-21) vs 10 (4-13) days, P = .023]. HCQ was independently associated with time to negativity test after adjustment for potential confounders (symptoms, comorbidities, antiviral drugs, pneumonia, or oxygen therapy) in multivariable Cox proportional hazards regression analysis (hazard ratio = 0.33, 95% confidence interval: 0.13-0.9, P = .024). On day 14, 47.8% (14/23) patients tested negative in the HCQ group compared with 90.9% (10/11) patients who did not receive HCQ (P = .016).HCQ was associated with a slower viral clearance in COVID-19 patients with mild to moderate disease. Data from ongoing randomized clinical trials with HCQ should provide a definitive answer regarding the efficacy and safety of this treatment., Competing Interests: The authors have no conflict of interest., (Copyright © 2020 the Author(s). Published by Wolters Kluwer Health, Inc.)

Objective: This study compared the activity of ceftolozane-tazobactam and ceftazidime-avibactam against 120 bacterial strains, including extended-spectrum beta-lactamase (ESBL) producers, carbapenem-resistant Enterobacteriaceae (CRE), and Pseudomonas aeruginosa, isolated from patients admitted to Cleveland Clinic Abu Dhabi, United Arab Emirates., Methods: In vitro susceptibility was tested using the Etest strip minimum inhibitory concentration (MIC) method, and PCR was used to characterize the carbapenemase enzymes produced by CRE strains., Results: All 29 ESBL isolates were susceptible to ceftazidime-avibactam (MIC 50 0.125μg/ml), whereas all but one were susceptible to ceftolozane-tazobactam (MIC 50 0.38μg/ml). Twenty-seven (45%) CRE isolates were susceptible to ceftazidime-avibactam (MIC 50 ≥256μg/ml), whereas only six (10%) isolates were susceptible to ceftolozane-tazobactam (MIC 50 ≥256μg/ml). Very few NDM-1 isolates were susceptible to ceftazidime-avibactam, whereas the majority of OXA-48 isolates were susceptible. Twenty-nine (94%) P. aeruginosa isolates were susceptible to ceftazidime-avibactam (MIC 50 1.5μg/ml), whereas 30 (97%) isolates were susceptible to ceftolozane-tazobactam (MIC 50 0.75μg/ml)., Conclusions: Ceftolozane-tazobactam and ceftazidime-avibactam showed comparable activity against ESBL and P. aeruginosa, with ceftazidime-avibactam having lower MICs against ESBL isolates and ceftolozane-tazobactam having lower MICs against P. aeruginosa. Ceftazidime-avibactam showed better activity against all CRE isolates except for those carrying the NDM-1 enzyme., (Copyright © 2017 The Authors. Published by Elsevier Ltd.. All rights reserved.)

This report describes a longitudinal case of immunocompromised patient post kidney transplant who was admitted to our institution repeatedly for treatment of various infections caused by multi-drug resistant Klebsiella pneumoniae. The patient was successfully treated with a combination of ertapenem/meropenem on multiple occasions despite the elevated MICs. Our observations corroborate previous preclinical studies and case reports showing the efficacy of double carbapenem regimens against resistant Enterobacteriaceae.