Bilal Sayeed, a contractual employee at radiotherapy department of Sanjay Gandhi Post Graduate Institute of Medical Sciences, was tested H1N1 positive after which he got his family members including Abdullah (4), Salma (65), Umme Habiba (26), and Saba (25) tested for the same yesterday, SNS Yadav, Chief Medical Officer said.
All the four members also tested positive for the Swine Flu virus, Yadav said.
"Bilal might have contracted the infection from the PGI campus and passed it on to his family members. The director of PGI has been asked to look at the probable causes of the spread of the virus," he said.
However, they have been asked to remain alert and inform medical authorities in case if they had any problem, he said.
A retired Lance Naik died of H1N1 virus on January 9, while wife of a retired jawan died due to Swine Flu on January 13 in Lucknow.