
Yeah, but it could take several generations of chickens until “resistant” evolves into being immune enough to not lose half the flock every time. And in the mean time since human farmers will have to be tending to the chickens in some way, there always a risk of the virus jumping to humans.
Although they are both stories based on historical events that have been embellished, the Trojan war and the Hebrews leaving Egypt very well could have been happening at the same time (around 1180 BCE)