"As per information available with me, so far three persons have died of dengue in the state," the chief minister told reporters at Writers' Buildings.
Stating that she would speak on the issue tomorrow, Banerjee said there should be no wrong campaign about dengue.
Apart from Kolkata, other districts hit by the disease were North and South 24 Parganas, Howrah and Nadia, official reports said.
The health department website said dengue has so far claimed three lives in the metropolis with 405 cases reported and 1,2152 rapid tests done for dengue diagnosis.
Health department sources said the deaths were caused by dengue shock syndrome.
Municipal Affairs Minister Firhad Hakim said the state government and the Kolkata Municipal Corporation have taken steps to deal with the situation.
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He said orders of Rs 1.39 crore have been placed for purchase of oil for repelling mosquitoes.
On reports on non-availability of beds in hospitals, he said no patient should be turned away.
State-run hospitals were ready to admit dengue patients, he said, adding he himself helped in the admission of some patients who were later diagnosed to be suffering from typhoid.