And would your tests check a persons genes? They shouldn't.
Also, you realise i didn't release some ubervirus, just a vamped up cold virus.
The planet has been dangerously infected, deemed a quarentine risk, and therefore has Base Delta Zero initiated. This means the planet is being completely destroyed by orbital bombardment. In addition, all people have been moved to internment camps (where they were tested and forced to remain there) for the ease of their destruction. Following that Elite Stormtrooper MedCorps troops are finishing the rest off on the ground. The planets are taken because after that, the only thing in system is my craft.
Not a single almanian lifeform (including on its moons) remains.