New Delhi, June 6 -- Leah Masika was on the verge of tears as she thought of her valuable consignment of plantain stuck in a long convoy of trucks on both sides of the Uganda-Congo border. Her cargo, destined for Uganda, was starting to leak water, and would go bad within hours if there was no movement.

The Ugandan trader was awaiting clearance from authorities for trucks to pass through the Mpondwe border post on Thursday after they were prevented from entering or leaving Uganda as part of escalating measures to prevent cross-border Ebola contagion.

"Our things are here rotting," she said.

On May 28, about two weeks after Congo declared an outbreak of Ebola in the eastern Ituri province, Uganda closed its western border in a decision ...