In response, the U.S. Centers for Disease Control and Prevention (CDC) has issued a warning for travelers headed to China and other countries dealing with outbreaks, including Bolivia, Kenya, Madagascar, Mauritius, Mayotte, Réunion, Somalia and Sri Lanka. Chikungunya can cause serious pain, especially in the joints.

Most people infected with the virus develop fever, joint pain, headache, muscle pain, rash, joint swelling and other symptoms.