So, it's very reasonable that the base requested researchers to study it first.
They had to study it first so that they could raise the morale of the army back to normal and also avoid people from having too much psychological shadow from killing zombies.
After they announced the result of the study, there were probably more people willing to kill zombies.
It is also the reason why Treyton didn't stop Jasmine in her research even though it's a bit troublesome sometimes. Luciel had heard Treyton hinting at Jasmine to study about it at the beginning.
Jasmine was also interested in it, so she had studied it for a while in the beginning, and the result was just like what the North Base studied.
The people who turned into zombies were truly dead.
After knowing the result of Jasmine's study, it could be said that Treyton and the others visibly had an easier time killing zombies.
