The latest variant, or sublineage, of SARS-CoV-2 to emerge on the scene, BA.2.86.

Secondhand smoke may be an important but overlooked source of chronic lead exposure in children and adolescents.

The Central African Republic is one of the poorest countries in the world. Its GDP per capita in 2022 was estimated at US$491 per year.

In Africa, groundwater is very important. It supports almost 100% of household and agricultural activities in rural areas.