A 15-year-old non-resident Indian (NRI), who came to India to visit her relatives, tested positive for Influenza A/H1N1 or swine flu on Friday.
The girl is the city’s third and the state’s fifth confirmed case of the infection.
“We have put her on Tamiflu. She is doing fine,” said Dr Pradeep Awate, head of the state influenza cell.
The girl’s mother, who travelled with her and is displaying swine flu-like symptoms, has also been admitted in the special quarantine ward at Parel’s Kasturba Hospital.
The girl had landed at the Mumbai airport early on June 22 and had consulted a local physician for common cold, cough and fever.
The doctor referred her to the hospital on June 24 after which her throat swab samples were sent to the Pune’s National Institute of Virology (NIV).
“Nine members of the girl’s family are quarantined at home. Besides that we are tracing others who she might have come in contact with,” said Dr Uddhav Gavande, deputy director of health services, Maharashtra.
Besides her, two other people were quarantined at Kasturba and Pune’s Naidu hospitals for suspected swine flu.
A 29-year-old man who arrived from London on June 20 checked into Naidu hospital on June 26 after he developed symptoms of the disease.
In another case, an 11-year-old boy who returned to India after travelling to Los Angeles and Florida in the United States of America on June 25 was quarantined at Kasturba hospital.
Throat swab samples of the two suspected cases have been sent to NIV and reports are awaited, said health officials.
One confirmed swine flu case was reported from New Delhi, taking the total of confirmed cases in the country to 81.