• Studies on bionomics of Anopheles dirus, the major vector of forest malaria in NE region of India. • Epidemiological observations on malaria in some parts of Tengakhat PHC, Dibrugarh district, Assam • Malariometric studies in some parts of Assam and Arunachal Pradesh • Mosquito fauna of Northeast India with special reference to the medically important vectors. • A study on prevalence and pattern of substance use in North-East India. • Studies on prevalence of filariasis in some tea garden population of Assam • Mosquito fauna of Dibrugarh district with special reference to Mansonia annulifera, a reported vector of Japanese encephalitis from the Dibrugarh district of Assam. • Studies on paddy-field dermatitis (Panikaint) among workers in rice fields of upper Assam. • Food-borne parasitic
zoonosis: status of metacercarial infection in fishes of Assam. • Study on Coronary Heart Disease and Hypertension (in Mizoram, Assam and Tea gardens of Upper Assam). ==References==