Efforts to reach fewer than 500 000 new HIV infections by 2020 are off track. This simple conclusion sits atop a complex and diverse global tapestry. Data from 146 countries show that some have achieved declines in new HIV infections among adults of 50% or more over the last 10 years, while many others have not made measurable progress, and yet others have experienced worrying increases in new HIV infections. http://www.unaids.org/en/resources/documents/2016/prevention-gap