The Darkening by Jasper T. Scott

The sun is dimming, the world is ending, and the long journey south is only the beginning.
An interstellar dust cloud blots out the sun, and alien spores blanket the Earth, bringing a sickness that twists loved ones into something unrecognizable. As the world darkens and the infected grow more dangerous, Nate Corwin, a science teacher, and his wife Paula, a nurse, know their suburban home won’t keep them safe for long. With their children, Riley and Jonah, and their loyal dog, Max, they set out for Paula’s family farm in Florida—one place they pray might still be warm and safe.
But the road south is a gauntlet of killers, blizzards, collapsing refugee camps, and infected predators hunting in the dark. As the alien bloom spreads and humanity unravels, the Corwins must decide how far they’re willing to go to protect the people they love.

Category: Science Fiction – First Contact

The battle for Offutt is over—but the war for Earth has begun.
A vast mothership hangs over Omaha, and the Bloom is spreading across the heartland, pulsing like a heartbeat. The Corwins and the Reeds escape the base, only to find a nation collapsing into chaos—soldiers and civilians turning on each other, entire cities falling to the infected.
Paula feels the Bloom calling to her. Changed by her near brush with infection, she’s haunted by visions that may hold the key to understanding why the invaders came, and maybe, how to stop them.
They’ll have just one chance to pull humanity back from the brink before the unraveling is complete.