Greece reports 23 new West Nile virus cases in the past week, with 6 deaths so far this season. Total infections since May reach 65, per EODY, with cases concentrated in Attica, Thessaly and Central Macedonia.

Chad reports 8 cholera deaths in capital N'Djamena with 75 cases across nine neighborhoods. Government delegate Amina Kodjiana chairs emergency meeting on prevention and public awareness.

At least eight people have died in a cholera outbreak in N'Djamena, Chad's capital, officials confirmed on Wednesday, with 75 cases recorded across nine neighborhoods of the city.

Researchers in Australia, US and China develop light-activated nanoparticles to help surgeons detect and destroy glioblastoma cells, study says. The platform was tested in mouse models.

Researchers from Australia's University of Technology Sydney, Harvard University and Henan University in China have developed light-activated nanoparticles designed to help surgeons locate glioblastoma cells during surgery and destroy remaining cancer cells afterwards, according to a study published in Science Translational Medicine. The platform has been tested in mouse models and still requires human trials.

Russia's Roskachestvo detects E. coli in burgers from 5 major fast-food chains including The Бык, BB & Burgers and Burger Heroes; 7 brands flagged for microbiological violations.

Russia's Roskachestvo food quality watchdog detected E. coli bacteria in burgers from five major fast-food chains, with seven brands in total flagged for violations of mandatory microbiological safety regulations.

Australian-led review of 23 global studies finds heatwaves raise mental health risk in children aged 5-18 by 25%, with each 1°C temperature rise linked to ~1% more adverse outcomes.

An Australian-led review of 23 global studies, published in the International Journal of Epidemiology, finds heatwaves raise the risk of poor mental health outcomes in children aged 5-18 by 25%, with each 1°C rise in daily temperature linked to nearly 1% more adverse outcomes.