The Red Cross rejected Gov. Dannel Malloy’s attempt to give blood this morning in Farmington because of his potential exposure to malaria during that recent unannounced, pre-holiday trip to Afghanistan. “The only reason I knew that is (US Sen) Dick Blumenthal went into the booth before me and he comes out and said ‘you can’t give,’ because he was in the same situation,” Malloy told reporters in the UConn Health Center.