what was the 3rd wave in the 5th wave
The 5th Wave (novel) Third wave: Pestilence: The Others launch a scheme to infect as many remaining survivors as possible with a deadly virus. Using the Earth's birds as carriers (via falling excrement), the plague claims 97 percent of remaining survivors. The virus, which resembles an advanced form of Ebola, causes victims to slowly bleed to death until eventually "you've become a viral bomb. And when you explode, you blast everyone around you with the virus" (46).