Immune response and severity of Omicron BA.5 reinfection among individuals previously infected with different SARS-CoV-2 variants.

Introduction: COVID-19 continues to spread worldwide, with an increasing number of individuals experiencing reinfection after recovering from their primary infection. However, the nature and progression of this infection remain poorly understood. We aimed to investigate the immune response, severity and outcomes of Omicron BA.

Factors associated with diagnostic accuracy, technical success and adverse events of endoscopic ultrasound-guided fine-needle biopsy: A systematic review and meta-analysis.

Background And Aim: Endoscopic ultrasound-guided fine-needle biopsy (EUS-FNB) is used to diagnose lesions within or adjacent to the digestive tract. However, there is no report on the overall diagnostic accuracy, technical success, and adverse events of FNB. The aims of this study were to conduct a systematic review and meta-analysis to comprehensively assess the diagnostic accuracy, technical success, and adverse events of FNB.