Among mounting concerns over the worst Ebola outbreak in history, U.S. officials have employed a more proactive approach in their latest response to the growing global crisis.

So far, four cases have been diagnosed in the U.S, resulting in one death—Thomas Eric Duncan, a Liberian man who travelled via plane from Liberia to Dallas.

In West Africa, over 9,900 have been contracted the virus and nearly 5,000 have died, according to the World Health Organization.

The general consensus around the world is that the U.S. officials, along with other world leaders, have not done enough to contain, and ultimately stop the outbreak.

“Stopping Ebola is a priority for the United States. I’ve said that this is as important a national security priority for my team as anything else that’s out there. We’ll do our part. We will continue to lead, but this has to be a priority for everybody else,” said President Barack Obama at a recent United Nations meeting.

Earlier this month, the U.S. deployed military personnel to West Africa in an attempt to manage the outbreak in the place of its origins.

The president spoke of the responsibility he feels America has in helping those affected in Africa. “I want you to know that you are not alone. We’re working urgently to get you the help you need. And we will not stop, we will not relent until we halt this epidemic once and for all.”

The president as well as the Center for Disease Control (CDC), has denied the possibility of bans placed on flights at this time, according to the Director of the CDC, Tom Frieden, who spoke on Oct. 20. “We want to do something that protects Americans, not something that either is done for show or something that won’t have an impact,” said Frieden.

Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, has also voiced his disapproval of any bans on travel at this time, citing restrictions could have negative effects on trade for several governments in Africa.

“You isolate them, you can cause unrest in the country,” Fauci told Fox News. ”It’s conceivable that governments could fall if you just isolate them completely.”

In an attempt to manage efforts in the U.S. to contain the disease, Obama appointed Ron Klain to the position of Ebola response coordinator. In this new role, Klain, a former chief of staff to both Vice President Al Gore and Vice President Joe Biden, will oversee and manage the federal government’s overall response to the Ebola crisis.

Since his appointment though, Klain has been criticized his lack of response to the recent clashes between state and federal authorities.

Despite strong resistance and criticism from White House officials and the medical experts, New York and New Jersey officials have initiated strict mandatory quarantine policies on the state level.

New Jersey Governor Chris Christie and New York Governor Chris Cuomo both announced these new mandates on Oct. 24, ignoring pleas from White House administration.

According to a statement issued by the White House following a meeting between Obama and the Ebola response team, Obama said, “these measures must recognize that health care workers are an indispensable element of our effort to lead the international community to contain and ultimately end this outbreak at its source, and should be crafted so as not to unnecessarily discourage those workers from serving.”