Chikungunya is a viral fever caused by an alphavirus that is spread by bites from Aedes aegypti mosquitoes. Humans are the major reservoir of chikungunya virus. Mosquitoes usually transmit the disease by biting an infected person and then biting someone else. An infected person cannot spread the infection directly to other persons. Aedes aegypti mosquitoes bite during the day time.
Incubation period varies from l to 12 days.
The symptoms of Chikungunya include fever, a maculopapular rash usually involving the limbs and trunk, and arthralgia or arthritis affecting multiple joints which can be debilitating.
Thrombocytopaenia may occur but is uncommon.
The treatment is symptomatic as there is no specific treatment for Chikungunya. For arthralgias and arthritis, ibuprofen, diclofenac or naproxen may be used. Rest is also important to reduce morbidity.
It is on similar lines as that for dengue infection.