United States is making all efforts to combat Ebola spread after the first Ebola case was reported in Dallas Texas but is also urging other countries to step ahead and fight the deadly disease in West Africa aggressively. US President Barack Obama said in a press conference in the White House press that the US is making progress' to contain the disease in West Africa but other countries too need to 'step up' and could not remain on the sidelines Xinhua reported. 'We have not seen other countries step up as aggressively as we need them to' Obama said a