Temperature Fluctuation, Depleting Immunity Contributing Factors

Pune: Scientists at the National Institute of Virology (NIV) have seen a rise of 10% to 15% in swine flu cases in March. “The virus transmission earlier was not more than 2%. We have observed a sharp rise in the transmissibility of the swine flu virus since March,” NIV deputy director and senior scientist Mandeep Chadha told TOI on Monday.