[mrguyorama]

HIV isn't the only virus that generates decoys to trick antibody development, so having techniques that bypass that decoy strategy is very useful.

[Melatonic]

What else does this?

[greazy]

I think all viruses do to some extent. We refer to them as DIPs https://en.wikipedia.org/wiki/Defective_interfering_particle

List includes RSV, flu, sc2 and of course hiv