What is chickengunia and how it occurs?

Chikungunya is a relatively rare form of viral fever caused by an alphavirus that is spread by mosquito bites from the Aedes aegypti mosquito (Tiger mosquito).It is mainly in Africa and South East Asia, including India, the disease is new to Gulbarga

Chikungunya is generally not fatal. However, in 2005-2006, 200 deaths have been associated with chikungunya on R?union island and a widespread outbreak in Southern India (especially in Tamil Nadu, Karnataka, Kerala, and Andhra Pradesh). As of July 2006, Tamil Nadu reportedly had the largest number of cases, specifically centered around the southern districts of Madurai and Tirunelveli. The number of reported cases also registered a great increase in the districts of Salem, Chennai, and Chengalpattu. As of September 2006, after the flood and heavy rains in Rajasthan in August 2006, India, thousands of cases have been detected in Rajsamand, Bhilwara, Udaipur, and Chittorgarh districts. As of October 3, 2006 in the southern indian state of Kerala, 92 deaths are attributed to Chikungunya and majority of the casualties were reported in the district of Alapuzha. This latest outbreak in Alappuzha is supposed to have transferred from Parassala, the southrenmost point of Kerala state where a recent outbreak were reported before the episodes of Alappuzha started.