Residents of this Dallas neighborhood began their Sunday with a 7:15 am reverse 911 call.
Officials were telling the community someone in their neighborhood had contracted Ebola.
She's a health care worker living in nearby apartment complex.
She contracted the deadly virus at a local hospital while caring for 'patient zero' -- the first person diagnosed with Ebola in the U.S.
CDC Director Thomas Frieden:
SOUNDBITE: THOMAS FRIEDEN, CDC DIRECTOR SAYING:
"The level of her symptoms and indications from the test itself suggest that level of virus that she has was low."
The woman is now likely the first person INFECTED with Ebola in the country.
Throughout this Dallas neighborhood, officials are knocking on every door to talk to residents face to face about what's happened.
They're coming back again later today to make sure they didn't miss anyone.
Meanwhile, Dallas fire and rescue have decontaminated the lobby of her apartment comp
