The girl from Vettaikaranpudur in Pollachi in the district, was admitted to the hospital three days ago and succumbed yesterday, without responding to treatment, they said.
Similarly, Shantamani of SS Kulam in the city, was admitted to the government hospital on July 29, after undergoing treatment in a private hospital. She died without responding to treatment.
Meanwhile, Satishkumar Sing from Tirupur was admitted to a private hospital there with complaints of chest pain on July 22 and was shifted to a private hospital here the next day.
However, doctors declared the patient brought dead, the sources said.
More From This Section
All the three deaths were declared late last evening.
Meanwhile, 50 persons are undergoing treatment for dengue and nearly 200 for different types of viral fever in the government hospital, they said.
Two children had died of dengue at the government hospital here last week.
The Tamil Nadu government had stated on July 22 that it was acting on a "war-footing" to tackle the spread of dengue fever in some parts of the state.