Monitoring SARS-CoV-2 variants with complementary surveillance systems: risk evaluation of the Omicron JN.1 variant in France, August 2023 to January 2024.

BackgroundEarly detection and characterisation of SARS-CoV-2 variants have been and continue to be essential for assessing their public health impact. In August 2023, Santé publique France implemented enhanced surveillance for BA.2.

Automatic spread factor and position definition for UAV gateway through computational intelligence approach to maximize in wooded environments.

The emergence of long-range (LoRa) technology, together with the expansion of uncrewed aerial vehicles (UAVs) use in civil applications have brought significant advances to the Internet of Things (IoT) field. In this way, these technologies are used together in different scenarios, especially when it is necessary to have connectivity in remote and difficult-to-access locations, providing coverage and monitoring of greater areas. In this sense, this article seeks to determine the best positioning for the LoRa gateway coupled to the drone and the optimal spreading factor (SF) for signal transmission in a LoRa network, aiming to improve the connected devices (SNR), considering a suburban and densely wooded environment.

The transition from cigarette smoking to the exclusive or partial use of e-cigarettes: A multi-stage mixed methods study among French university students.

Background: Few studies have estimated the frequency of e-cigarette use by smoking status among French young adults, and how those who smoke tobacco start and continue to use e-cigarettes. Our aim was to describe e-cigarette use among students who smoked tobacco.

Methods: A multi-stage, mixed methods study was conducted at the University of Bordeaux between September 2018 and March 2020.