Harbinger

Humanity has grown and spanned out through several galaxies and lost attachments to Earth. Due to their carelessness, a deadly galactic virus breaks out and a severe quarantine is on Earth and its neighboring planets had all facilities abandoned until the virus dies out. The origin of the virus is little to be known except it came from a thought to be uncivilized race. Everything about them is shrouded in mystery but the mortality rate is almost 100% on all those who're infected. Centuries go by and Earth was decided to be safe to travel but precautions must be made to ensure safety. The infected still roam parts of the world and must be cleansed off the planet before colonizing can begin once more. This is a story with multiple perspectives of a squadron set on active duty to arrive on the planet for the operation to come, deemed as the Vanguard.