Yes, the mice who didn't get HerpeCide had brain damage and died. The herpes virus attacked the nervous system. Herpes encephalitis can be a real problem in humans. HerpeCide protected mouse brains.
FluCide didn't seem to cause any problems in brains or any other major organ:
"No direct adverse clinical effects were found upon administration of the FluCide candidate intravenously at doses of up to 300mg/kg/day for 14 days (a total of 4,200mg/kg) in rats. Organs were examined for gross histological observations. Microscopic histological tissue analysis was also performed. There were no adverse histological findings in gross organ level histological examination, nor were there any adverse findings in microscopic histological analysis. Equally importantly, there were no meaningful effects observed on animal weight gain, food consumption, hematology, or clinical chemistry at the end of the 14 day dosing period."
I know, I know, BASi is in on the conspiracy of fraud too.