Good movie. Not enough content.

This movie left me wondering about a few unexplained or unbelievable things- how did the immunes get their immunity? How did the grandma get the virus if she'd been quarantined and the grand daughter not get the virus.

It was entertaining and the action was good but given some better explanation as to why the COVID mutated so much not much was said about any cure?

It was entertaining, but the love story was too predictable. The foundation was good. The plot development needed more room to breathe.