Xenocide

The war for survival of the planet Lusitania will be fought in the heart of a child named Gloriously Bright.
On Lusitania, Ender found a world where humans and pequininos and the Hive Queen could all live together; where three very different intelligent species could find common ground at last. Or so he thought.
Lusitania also harbors the descolada, a virus that kills all humans it infects, but which the pequininos require in order to become adults. The Starways Congress so fears the effects of the descolada, should it escape from Lusitania, that they have ordered the destruction of the entire planet, and all who live there. The Fleet is on its way, a second xenocide seems inevitable.
Xenocide is the third novel in Orson Scott Card's The Ender Saga.
THE ENDER UNIVERSE
Ender series
Ender's Game / Ender in Exile / Speaker for the Dead / Xenocide / Children of the Mind
Ender's Shadow series
Ender's Shadow / Shadow of the Hegemon / Shadow Puppets / Shadow of the Giant / Shadows in Flight
Children of the Fleet
The First Formic War (with Aaron Johnston)
Earth Unaware / Earth Afire / Earth Awakens
The Second Formic War (with Aaron Johnston)
The Swarm /The Hive
Ender novellas
A War of Gifts /First Meetings
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