<prompt> Plague epidemic in Surat in 1995 has occurred after a silence period of18 years23 years28 years30 years  <response>: The last case of plague in India was repoed in 1966 and after that there was a silence period of 28 years till the reappearance of the disease in September 1994, when there was an outbreak of bubonic plague in Beed district of Maharashtra and pneumonic plague in Surat Gujarat. 