In the discussion of zombie-pandemic-apocalypse fiction, I had to slap my forehead for forgetting about Justin Cronin's The Passage (2010). If you like horror novels or post-apocalypse novels, I heartily recommend it. It's not technically a zombie apocalypse (even though it basically is), it's a vampire apocalypse. Sometimes the details matter, sometimes they don't. And if you like it, it's the first book in a trilogy (that I've yet to continue, so if you post any spoilers for The Twelve or City of Mirrors, please note them accordingly). Note that there was a failed attempt to adapt The Passage as a television series in 2019. Definitely do not watch that before reading the book. If you've read the book and are just curious to see what they did, I didn't think it was terrible, but it wasn't wholly successful, either, and got canceled after one 10-episode season.