Provisional data from the Centers for Disease Control and Prevention (CDC) shows that through the first six months of 2018, 18 chikungunya cases were reported. All cases were imported, or occurred in travelers returning from affected areas.
The cases were reported from 11 states– New York (5), Texas (3), New Jersey (2) and one each from California, Delaware, Illinois, Kentucky, Maine, North Carolina, Virginia and Washington.
To date, no locally acquired cases have been reported in the US.
Chikungunya is a viral disease transmitted to humans by infected mosquitoes. It causes fever and severe joint pain, which is often debilitating. Other symptoms include muscle pain, headache, nausea, fatigue, and rash.
The disease shares some clinical signs with dengue and Zika, and can be misdiagnosed in areas where they are common. As there is no cure, treatment is focused on relieving the symptoms.