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A 58-year-old woman died here due to swine flu, while another was still under observation, a health official said on Monday.

The  woman, identified as Rehana Khurshid of Arbutnot, Shillong, who tested positive for the flu following her return to Shillong after visiting her sons in Pune, died on Sunday night at the Nazareth Hospital.

Health department official said she was admitted to the hospital here on October 17 with symptoms of fever, cough, weakness, respiratory distress after visiting her son at Pune.

Another woman, a resident of Mumbai, has been diagnosed with the H1N1 virus and is under close observation in the hospital, Health and Family Welfare Secretary Pravin Bakshi said.

Also read: Two swine flu cases detected in Shillong, Meghalaya on high alert

29-year-old Naomi Conslaves from Mumbai visited Shillong on October 18 along with her mother to attend a Catholic Convention.

After developing symptoms of fever, weakness, headache, she along with her mother were both admitted to Nazareth Hospital here. While the daughter, Dr Naomi was tested positive for H1N1, her mother is still under observation.

Bakshi said the state government has sounded a health alert across Meghalaya and has also alerted the Airport Authority of India officials at the Guwahati international airport, Shillong airport and officials from Meghalaya helicopter services.

Swine flu is a respiratory disease which infects the wind pipe (respiratory tract) of pigs and gets transmitted to human beings.  It results in nasal secretions, cough, decreased appetite and restlessness.