The call was issued in a statement on Tuesday night since Savar’s Rana Plaza rescue was still going on.“A strike in this time will affect rescue and medical assistance,” the statement read.Shutdowns will add to the pressure on the industry that faces burden of the Savar collapse and political unrest, it said.The 18-Party alliance led by the BNP called daylong shutdowns for May 8, 9 and the Hifazat called another for May 12.The statement said a Chinese delegation was coming on Thursday for buying large supplies of readymade garment and the general strike could affect this deal.