The most common symptoms of chikungunya viral infection are fever and joint pain, often in the hands and feet. Other symptoms include muscle pain, headache, joint swelling, nausea, fatigue, and rash.

At least five million chikungunya cases have been reported since 2008, the FDA said. Other symptoms include rashes, headaches and muscle pain. Joint pains can persist for months or even years.

Chikungunya is a viral disease spread by mosquito bites; it causes fever, severe joint pain and rash on the body. Chikungunya occurs in Africa, Asia and the Indian sub continent.

The most common symptoms of chikungunya virus are fever and joint pain, alongside headaches, muscle pain and rashes. Here are some of the words and phrases the BBC encountered this year that ...