Conspiracy theorists hounded Grant Wahl's family when he died. Now they're back

Grant Wahl's death at the Qatar World Cup set off conspiracy theories that persisted long after they were disproven. (Anne-Christine Poujoulat/AFP via Getty Images)

On December 9, the phone of epidemiologist and infectious disease physician Céline Gounder began blowing up with notifications, all relaying the same message.

Her husband of 21 years, soccer journalist Grant Wahl, had collapsed halfway around the world while covering the World Cup in Qatar. An hour later, Dr. Gounder learned that Wahl had died.