 Why was Mitchell irritated that the story on the virus for headaches had been leaked to the newspapers?
"Doctor, we understand you have severe headaches," Mitchell said. "Aspirins would still be used to reduce fever and relieve muscular pains," Mitchell said. "There are a number of different causes for headaches—nervous strain, fatigue, physical diseases from kidney complaints to tumors, over-indulgence—but there is one effect of all of this, the one real cause of headaches," Mitchell announced. "When your heart stops, your blood pressure goes to its lowest point," Mitchell said. By established periodic cycle he should be suffering hell right now, shouldn't he?
 He felt it was too early to release without verified results.
 He feared the virus was counteractive.  He feared that Macklin's wife would be angry  He felt it was too early to release without verified results.  He feared that the government would shut their project down.