The first word that comes to mind is Descolada (Portuguese
for "ungluing") Wikipedia. The Descolada is a virus that kills all
humans, but the pequininos, the natives of Luisitania who need the virus in
order to stay alive and become adults that can reproduce. The Starways
Congress is afraid of the effects of the virus on humanity, and has ordered the
destruction of the planet.
This is book 3 of the quartet and Ender is once again handed
the task of saving the World. The story is very religious and very confusing
nevertheless an interesting read if you don’t mind diving into deep philosophy
and questions that have no answers. There is this obsession with being filthy
and dirty and unworthy, it’s like “oh enough already”.
The philosophy sounds repetitive Card makes the same points
over and over again. I had a very hard time connecting to any of the characters
because I could never figure out who they were. It was very clear that Card
used each character to reflect a particular philosophy and then have them
interact with each other to explore that particular dilemma.
Card explores a number of ethical questions, does human
survival justify the extermination of another species, and how fear of the
unknown will always be a barrier when interacting with others.