Southern China is battling its worst chikungunya outbreak on record, fueled by mosquitoes and changing environmental conditions. An editorial published in Biocontaminant highlights that Guangdong Province is now facing the largest chikungunya fever outbreak ever documented in China. Chikungunya fever is caused by the chikungunya virus, an RNA virus belonging to the Alphavirus genus in the Togaviridae family. “The outbreak reflects both the global spread of chikungunya and the favorable conditions for mosquito-borne diseases in southern China,” said lead author Guang-Guo Ying of South China Normal University. Reference: “Outbreak of chikungunya fever in Guangdong: transmission and control of arboviruses” by Guang-Guo Ying and Yi Luo, 11 August 2025, Biocontaminant.