France now poses a risk for chikungunya.
The World Health Organization confirmed four cases of the mosquito-borne disease in south eastern France on Friday. Including the nine other possible cases, the WHO fears at least 13 people are infected with chikungunya.
While four confirmed cases may seem small, mosquito-borne diseases are not native to the region. This continues a trend of mosquito-borne disease that are becoming more frequent throughout parts of Europe.