Harris said the target of zero cases must be met.
I believe this will be an important contribution to getting down to zero cases".
Zero cases in Liberia, and this entire region, must be everyone's goal," he said.
At the March hearing, Judge Hellerstein called the ground zero cases he had handled his "greatest challenge".
Cross-border transmission seems unlikely since neighbouring Guinea has zero cases while Sierra Leone was declared Ebola free this month after 42 days without a case.
Guatemala, Honduras and El Salvador have reported exactly zero cases of measles each year since 2008 to the World Health Organization, while Mexico noted 3 in 2011.
In just over a year, Haiti has gone from having zero cases to having the deadliest cholera epidemic in the world.
As the ThinkProgress thinktank has noted: "Iowa's Republican secretary of state uncovered zero cases of voter impersonation at the polls during a two-year investigation".
The rate of infection has since drastically slowed, although there has yet to be a sustained period of zero cases, as in Liberia.
"We are past the acute stage of this epidemic and we are in range of getting to zero cases," he said.
"These countries will not be able to begin to fully recover until they get to zero cases and stay there," said Hald.
