First Ebola patient in the US in critical condition

Thomas Eric Duncan, the first person diagnosed with Ebola on US soil, is in critical condition.

Information released Saturday afternoon by Texas Health Presbyterian Hospital Dallas, the hospital where he is staying, revealed that Duncan's condition has gone from serious to critical.

Currently, there are about 50 people being monitored for Ebola after having known or possible contact with Duncan. Nine of these people had direct contact with Duncan, including his four relatives, with whom he was staying before he was sent to the hospital. The other 40 are being monitored for Ebola symptoms, but their contact with Duncan is less certain, health officials said today.

So far, none of the individuals being monitored by health officials are showing any signs of Ebola.

The first Ebola diagnosis in the U.S. has raised concerns about whether the disease could spread in the U.S. Federal health officials say they are confident they can control it.