C hina is grappling with a record-breaking outbreak of the chikungunya virus, with 10,000 cases reported so far. The mosquito-borne illness, which causes symptoms such as fever, joint pain, and rash, is particularly dangerous for the young, elderly, and those with pre-existing health conditions.

Thousands in southern China have been infected with a mosquito-borne illness in the past few weeks, in what's considered one of the most notable outbreaks of the disease since it was first detected in the country nearly two decades ago.