Talk:Precursor Race/@comment-78.131.108.183-20170616074508/@comment-31653619-20180421181441

No, Kharaa had already infected their race before they arrived on 4546B. The reason they came to the planet was to find a cure for it. Kharaa was only released onto 4546B (infecting the researchers and the ecosystem) after the Disease Research Facility was destroyed by a Sea Dragon.