Right. that's my point. Brazil doesnt have much info. Its all inconclusive data that indicates that UFOs are just that, UFOs. Its because the objects are not any type of known identifiable craft. 

America is the country holding out. But as more countries come forward America will feel more pressured to do so. And though the government wont say it outright, a credible leak (whether intentional or not) would blow the thing wide open. The more people find out the more they will want to know. It is only a matter of time.

They live underground in advanced societies.

people say that I'm an alien. lol

The truth must be known. Aliens are out there. Inform yourself. Its all on the Internet.

What we need though is irrefutable evidence to back up the alleged reports. 

The governments of the world must come forward and show us.

Sure just look into comments under any review of big exclusive game on any gaming site.

They are around, but not here.

I understand your point, but your first and second line contradict each other.

First you say that aliens are out there. An affirmation like you are absolutely sure.

The second you say that you dont have irrefutable evidence.

I think you should be a bit more cautious with how you phrase it.

Not trying to be annoying, just contain your enthusiasm.

You just can't get or posses immunity for another planet. There are biological rules on planets, and adapting to a alien planet is near impossible. It's destined to fail. You can't be above that, no technology can make that so. 

No intelligent creature would try it, or they wouldn't be intelligent. Manned spaceflight is pointless for any species. Why do you think we're sending all those probes?

I am going on pure conjecture here, but the way I see it, if an Alien race can transverse the stars and travel at at least 10.5 lightyears (distance to the closest known exoplanet) I'd think they would know a thing or two about bacteria, pathogens, diseases and what not. Were talking about ultra advanced technology. Things that humans don't even have the fundamental science to understand.

Lets go on what is already known.

UFOs can move thousands of meters in a second from one stationary position to another (confirmed by radar tracking and eye witness accounts.) No sonic boom either. Modern scientists cant even begin to explain how that is possible. 

That alone confirms that if the UFOs are in fact of an Alien nature they are leagues ahead of us in technological achievement. Why wouldn't it be the same with medical science. Think nanomachines. If we had them they alone could eradicate diseases at the molecular level. Many scientists believe it'll be possible within 50 or so years. Just look at the advances which have been made in the last 100 years. Once we had microscopes it became so much easier to figure out the human body and nature of diseases. So Imagine  what we could do if we had nanomachines or better technology? And lets not even get started on the potential of genetic engineering. Humans are just lacking the science and the tools. But just because we are doesn't mean an advanced alien race would too.  

The idea that you could control, order or update biljons of cells which make up a complex body, is nonsense.The statistics are impossible to beat. Impossible. No technology could do it. None.