So if scientists are able to kill all HIV, we can still expect a remain of the virus in a skeleton and infect the world 20-30k years later! Tech world should use this virus for designing ultra durable DVDs.
HIV cannot live outside the host for more than 10-12 hours.
Also, the virus found only infects amoebas so we should be safe. However, it begs the question that what new viruses (and diseases) await us as more ice melts with global warming?