Only Wrong Once - Jenifer Ruff

A sinister experiment outside Aleppo.
Two deaths: one in LA, one in Boston, each with the same horrific symptoms.
A powerful ISIS leader chooses an American-born microbiologist from the University of Damascus and manipulates him into doing the unthinkable: weaponize a deadly virus and recruit American citizens to disperse the disease.
In Charlotte, a lonely banker desperate for a more meaningful life receives increasingly urgent requests of Come Visit from his cousin in Syria. After losing his job and traveling overseas, will he become a willing participant in the inevitable terrorist plot?
In Los Angeles, FBI counterterrorism agent Quinn Traynor and his team receive a call from CDC agent, Madeline Hamilton. She’s discovered the first victim of a lethal, unfamiliar virus. Their joint investigation uncovers evidence of the imminent bio-terror attack and their only hope is to identify the terrorists carrying the disease. With just two days remaining before it’s too late, the FBI and the CDC race to prevent a pandemic. The ensuing nightmare will hit closer to home than they ever anticipated and one of them will pay an unimaginable price for protecting the country.
From secret jihadist bunkers in Syria to the city streets of Los Angeles, Boston, and Charlotte, Only Wrong Once is a chilling, internationally relevant suspense novel that will leave you reeling from the too-real prospect of a global terrorism nightmare.