Cholera has reared its ugly head in the city again.
On Wednesday night, nine Chira Bazaar residents were rushed to Kasturba hospital with suspected cholera and two to GT Hospital.
Virendra Jadhav (20) and Lalchand Verma (28), who were admitted to GT, are critical.
Cholera is contracted by consuming contaminated water.
The patients, aged between 18 and 40 years, are migrants from Uttar Pradesh. They had been drinking water from a bore well.
“We buy 20-litre cans of well water for Rs 3 each from a hand-cart puller,” said Ramdaras Choudhary, who lives in a godown at Chira Bazaar in south Mumbai.
Dr Jairaj Thanekar, civic executive health officer, said the 11 cases could only be confirmed after tests are repeated at Kasturba Hospital. “They are not classic (more virulent strain) cholera cases,” he said.
Civic officials said the 11 men were rushed to GT Hospital on Wednesday and then shifted to Kasturba after they tested positive for cholera in the hanging drop test — a stool examination to check the presence of bacteria.
The civic body usually does not confirm cholera cases till a tissue culture test is done.
Independent doctors, however, said the hanging drop test is enough to establish presence of the bacteria.
Additional Municipal Commissioner Manisha Mhaiskar said they had taken samples of the water from the bore well at Chira Bazaar and sent them for testing.
“We have set up a medical camp and are carrying out door to door screening in the area,” she said.
In July, over 40 people from Ambedkar Nagar slum in Cuffe Parade and other parts of the city were treated for cholera.