After coming under criticism for his decision to quarantine a nurse, Christie appeared on the "Today" show to defend the policy and criticize the CDC.
The U.S. CDC has provided guidelines aimed at building a national standard on the way to handle the Ebola virus.
The hospital confirmed early reports and said the patient was "appropriately isolated" and being treated.
Georgia and Minnesota instituted new Ebola restrictions Monday, the same day N.J. and N.Y. eased mandatory quarantine requirements.
Nurse Kaci Hickox, who returned to the U.S. after treating patients in Sierra Leone, has described her quarantine experience as "frightening."
Ebola experts believe arrival screenings for the virus are largely ineffective.
AIDS activists have joined health experts in opposing mandatory quarantines for U.S. health workers returning from West Africa.
A Japanese journalist who spent two months in Ebola-ravaged Liberia was found with a fever at Tokyo's Haneda airport on Monday.
Craig Spencer was in contact with several friends prior to developing a fever and testing positive for Ebola.
“The patient being monitored in isolation has thankfully been symptom-free for the last 24 hours,” New Jersey's Health Department said.
Illinois has also introduced a quarantine policy for "high-risk" travelers coming from West Africa.
The nurses did not press Duncan on the details of his travel history, something that could have alerted them to his exposure to the virus.
The boy was vomiting and had a 103-degree fever. His family is being quarantined in their apartment.
New York, New Jersey and Illinois implemented a mandatory 21-day quarantine aimed at people returning from Ebola-hit countries.
Several people have been tested for Ebola in Australia, but so far, no cases have been reported in the country.
Asymptomatic health care workers returning from Africa are to be monitored from home.
Quarantined Ebola nurse Kaci Hickox says she has hired a lawyer to challenge her mandatory isolation.
Samantha Power's trip comes as three U.S. states begin mandating quarantines for health workers returning from the Ebola-stricken region.
The U.S. Ambassador to the United Nations is visiting West Africa, as more stringent quarantine regulations take hold in some states.
Blood transfusions from survivors of the virus have been used in the past to treat those still suffering from the disease.
Symptoms worsen for New York City's first confirmed Ebola patient, though health officials say that's not unexpected.
After spending a month fighting Ebola in Sierra Leone, a nurse who tested negative for the disease calls for more "humanity" toward returning health care workers.