The second biggest Ebola outbreak in history is going on the in the Democratic Republic of Congo right now. It's second only to the 2014 outbreak that infected nearly thirty thousand people and killed more than 11,000.

And now, it may be here in America.

An American healthcare worker was exposed to the virus while treating patients in the DRC. The worker, whose name has not been released, flew back to the United States on Saturday and was put into quarantine for up to two weeks at the University of Nebraska Medical Center (UNMC) in Omaha.

A few things that are important to note here.

The healthcare worker has not tested positive for Ebola, nor is the person showing any symptoms.

If the worker develops Ebola, it still doesn't mean that he or she would have made fellow travelers sick. Ebola is not contagious until symptoms are exhibited, so if it's true that there were no symptoms when the person was admitted to the UNMC, then it's unlikely that the virus was passed on to others.

So it's not the time to panic. But it's time to be watchful.

Some details about the current Ebola outbreak in the DRC

The current outbreak in the DRC could easily get out of the country because it's spread to cities that are major transportation hubs to the rest of the world.  There are other variables that are also making it difficult to contain.