Lack of correlation between school reopening and trends in adult COVID-19 hospitalisations and death rates during the Delta and early Omicron periods: an ecological analysis of five countries.

Objectives: In this ecological study, we describe SARS-CoV-2 case incidence for school age and adult populations, COVID-19 hospitalisation and death rates during Delta and the early Omicron periods, before and after schools reopened in five countries.

Methods: Data were extracted from government websites. Cases and COVID-19 hospitalisation and death incidence rates were calculated during the Delta and early Omicron periods in Australia, Canada, Denmark, Finland and the United Kingdom, for two weeks preceding and six weeks after schools reopened.

Endoscopic ultrasound with bronchoscope-guided transesophageal cryobiopsy: A case series with technical insights, key enablers, and review of literature.

Endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) is an established technique for lung cancer staging and the diagnosis of mediastinal diseases. Recently, the paradigm of EBUS guided mediastinal sampling with conventional cytology has shifted over to histology specimens through the use of cryobiopsy. This case series explores the novel technique, key enablers, and potential advantages of endoscopic ultrasound with bronchoscope-guided transesophageal cryobiopsy (EUS-B-TEC).

Federated learning as a smart tool for research on infectious diseases.

Background: The use of real-world data has become increasingly popular, also in the field of infectious disease (ID), particularly since the COVID-19 pandemic emerged. While much useful data for research is being collected, these data are generally stored across different sources. Privacy concerns limit the possibility to store the data centrally, thereby also limiting the possibility of fully leveraging the potential power of combined data.