China is tracking a rise in Chikungunya virus cases. Learn more about the outbreak and how health officials are responding.

Chinese authorities have taken action to curb the spread of chikungunya, a virus causing fever and joint pain.

A 28-year-old woman, with recent travel to Cuba, presented to the doctor with complaints of cough, sore throat, and vomiting that developed within that same day. She also noted a widespread rash that ...