The district health authorities have initiated a slew of preventive measures, including fogging, to prevent the spread of Japanese Encephalitis in the district, after two positive cases were reported by the National Institute of Virology field station at Vandanam here.

District Medical Officer (DMO) C. Muraleedharan Pillai said two persons tested positive for Acute Encephalitis Syndrome at the Vandanam field station of NIV. One case was reported from Punnapra and another from Purakkad. The district health authorities have hence decided to focus the drive in Ambalappuzha block which encompass Punnapra and Purakkad. This was decided at a meeting of doctors in the district held here on Saturday.

There was also an unconfirmed case of Japanese Encephalitis from Punnapra. The three have been admitted to Alappuzha medical college for treatment. The first case of Japanese Encephalitis in the State was reported from Alappuzha in 1995-96. In 2011, 34 cases were reported from Alappuzha.

The DMO said dengue cases in the district were isolated, while cases of leptospirosis have not been confirmed. Reports had said there were four cases of dengue and three cases of leptospirosis including a death in the district.