We All Fall Down by Jennifer Bernardini

Hg34, a super virus, has scorched the earth of many of its inhabitants. Those unlucky enough to still be wandering the streets must fight for their survival. Choice becomes an illusion and the fate of millions rests uneasily in the palm of President Virginia Hill’s hands when she runs for, and wins, the presidential election. Civilization is crushed into dust when the President does the unthinkable and poisons her people. Libby and her six-year-old son team up with brothers Lincoln and Gideon, one a drug dealer with conspiracy theories on the brain and the other an ex-con. They struggle to survive as they search for answers: answers as to what happened and what to do next.