| first evidence of chikungunya virus infection in assam, northeast india. | during june-september 2008, an illness characterized by fever, headache and joint pain was reported in assam state, northeast india. it presented characteristic features resembling chikungunya or dengue virus infection based on clinical symptoms. dengue and chikungunya igm antibody was detected in 10.0% (28/280) and 3.6% (10/280) patients respectively. the chikungunya positive patients did not travel to and from any endemic region confirming indigenous transmission. persistent arthralgia and hea ... | 2011 | 21511316 |