Swatantra Saksena, working in Merchant Navy, came to Lucknow on February 1 and was admitted in SGPGI, Chief Medical Officer, SNS Yadav said, adding, he died today, taking the number of disease-related deaths to three.
A total of 53 swine flu patients have been detected in Lucknow so far, he said.
A retired Army officer died of H1N1 virus on January 9, while the wife of a retired jawan died on January 13 in the state capital.
The alarm bells rang two days ago after the death of a woman who had been admitted at the Medical College Hospital in a critical condition.
Principal of J N Medical College, Prof Tariq Mansoor, said there was no need for any unnecessary panic but all necessary precautionary steps are being taken to protect the Medical College staff.