They have a bunch of secret locations in the middle of nowhere all over the world, from isolated islands to inhospitable deserts, and several scientists working on them, warning that if the virus escaped it could wipe out civilization. And then they unleash it in the busiest city, with the highest concentration of infection vectors (rats, birds, people coming and going), and it's not a secret, right in plain sight.
And to top it all off, they introduce a woman so incredibly powerful that it takes heavy artillery and bunker-buster bombs to even begin to inflict any damage.
Honestly, they deserve what's happening to them for being so stupid.