This is a story set in a future where antibiotics are no longer effective due to overuse. People over the age of seventy are refused healthcare and end up in hospitals called waiting rooms.
I found the description of the aging effects on people approaching seventy went overboard, almost like the book was originally written about people in their nineties and got hastily edited.
A significant amount of the story takes place pre-crisis, with two characters discussing the unequal impact of TB across the world and working on a cure by researching plants. However, the actual research, and in fact most of the story, falls away as it turns into a love story about an affair. I found this a bit much, with the main character acting like a lovestruck teenager. I wouldn’t mind but I felt it really got in the way of the world-building and the story.
I found the second half of the book more engaging as the story threads started tying together. There was a particularly sweet scene between the main character and her daughter. However, the end itself got pretty silly though with bunny boiler style murderers and secret service agents turning up to funerals.