The Virus makes no sense
A virus with such a high mortality rate (38%) would kill its hosts quicker before it could spread. It could still be contagious but definitely not as contagious as the film is portraying it as. A super spreader Virus like Covid for example needs to have its hosts alive in order to spread the virus.
MEV-1 makes no sense. No sense at all. This virus (high mortality rate) wouldn't become a global pandemic.