Entertainment » OtherPosted at: Mar 28 2017 2:28PM Maharashtra records 63 swine flu deathsPune, Mar 28 (UNI) A Slight change in the pandemic H1N1 virus (swine flu) could be the reason for the rise in cases and deaths in several southern states since January this year, experts of the National Institute of Virology (NIV) said here today. The NIV, which calls this change an “antigenic drift”, has ruled out any major mutation of the virus and said that the antigenic drift is likely to have led to local outbreaks.Please log in to get detailed story.Tags: #Maharashtra records 63 swine flu deaths