Earlier today I posted a French news report that said "you can get chikungunya multiple times." A reader commented on this, because other sources have said contracting the disease confers immunity. "Which is it?" he asked. "Do we know?"
Chikungunya is rarely fatal. Symptoms are generally self-limiting and last for 2–3 days. The virus remains in the human system for 5-7 days and mosquitoes feeding on an infected person during this period can also become infected. Chikungunya shares some clinical signs with dengue and can be misdiagnosed in areas where dengue is common.
Chikungunya can be detected using serological tests. Recovery from an infection will confer life-long immunity.