Here is a simple argument - if you can prevent disease, you should.

"Can prevent disease" implies that you are not doing experimentation. If you're doing experiments, it means you don't know if you can.

You can prevent disease if you make experiments and learn how to prevent it.

So in this case experimentation is a first step in preventing disease.

Ethical frameworks are optional, humans sacrifice other humans to acquire power and knowledge regularly, that's the nature of the world