DALLAS, TX - OCTOBER 12: Workers with hazmat company CG Environmental Cleaning Guys prepare a tarp to block the view of media as they prepare to enter an apartment where a second person diagnosed with the Ebola virus resides on October 12, 2014 in Dallas, Texas. A female nurse working at Texas Heath Presbyterian Hospital, the same facility that treated Thomas Eric Duncan, has tested positive for the virus. Mike Stone/Getty Images/AFP
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DALLAS, TX - OCTOBER 12: Dallas police setup a barrier after a hazmat vehicle entered the alley behind the apartment where a second person diagnosed with the Ebola virus resides on October 12, 2014 in Dallas, Texas. A female nurse working at Texas Heath Presbyterian Hospital, the same facility that treated Thomas Eric Duncan, has tested positive for the virus. Mike Stone/Getty Images/AFP
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DALLAS, TX - OCTOBER 12: A man dressed in protective hazmat clothing treats the front porch of an apartment where a second person diagnosed with the Ebola virus resides on October 12, 2014 in Dallas, Texas. A female nurse working at Texas Heath Presbyterian Hospital, the same facility that treated Thomas Eric Duncan, has tested positive for the virus. Mike Stone/Getty Images/AFP
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Medical staff wearing protective suits work at the Carlos III hospital in Madrid on October 12, 2014, where 17 patients are under surveillance following the admission of Spanish nurse Teresa Romero infected with the ebola virus. Worldwide authorities scrambled to prevent the spread of the deadly Ebola virus today as the condition of a Spanish nurse infected with the disease improved. Romero was on October 6 the first person diagnosed as having caught the deadly hemorrhagic fever outside of Africa. AFP PHOTO / PIERRE-PHILIPPE MARCOU
