Calcutta: Dengue has claimed four more lives since Saturday, two of them in the city.

Tuli Naskar, a 38-year-old homemaker from Baguiati, died in a Salt Lake nursing home late on Saturday, becoming the sixth victim of the vector-borne disease in the Bidhannagar Municipal Corporation area.

Subhajit Majumdar, 36, from Netaji Nagar died of dengue at KPC Medical College and Hospital in Jadavpur. His death certificate mentions "sudden cardiac arrest due to or as a consequence of sepsis with NS 1 positive fever".

The death toll in the dengue outbreak in the Calcutta Municipal Corporation area is estimated to be around 20.

At least four other members of Tuli's family, including her husband, are down with undiagnosed fever or dengue. Her husband Jaygopal Naskar, 45, is in a nursing home in Teghoria.

Tuli's brother-in-law Nabagopal said she had been admitted to the same Teghoria nursing home last Tuesday. "Her condition kept deteriorating and we shifted her to AMRI Salt Lake on Friday."

The Naskars live in a cluster of houses in Baguiati, barely 350 metres from VIP Road and close to a municipal borough office. Several people from this neighbourhood are currently in different hospitals with dengue, sources said.

Mitali Nandy, from Prasadpur in Hooghly, died of dengue on Sunday and Anima Mandal, a resident of Habra, on Saturday.