A neighbor looks down from a balcony of a housing estate, where it is believed the nursing assistant who was tested positive for Ebola and her husband...
A neighbor looks down from a balcony of a housing estate, where it is believed the nursing assistant who was tested positive for Ebola and her husband live in Madrid, Spain,Tuesday, Oct. 7, 2014. Three more people were placed under quarantine for Ebola at a Madrid hospital where a Spanish nursing assistant became infected, authorities said Tuesday. More than 50 other possible contacts were being monitored. The nurse, who had cared for a Spanish priest who died of Ebola, was the first case of Ebola being transmitted outside of West Africa, where a months-long outbreak has killed at least 3,500 people and infected at least twice as many. (AP Photo/Paul White)
Ebola's victims may soon include a dog. Officials in Madrid want to euthanize the dog of a Spanish nursing assistant with Ebola because of the chance the animal could spread the disease.
At least one major study suggests that dogs can be infected with the deadly virus without having symptoms. But whether or how likely they are to spread it to people is less clear.
Lab experiments on other animals suggest their saliva or excretions might contain the virus. The head of the U.S. Centers for Disease Control and Prevention says it's important to look at all possibilities.
The Spanish nursing assistant and her husband have been in isolation since she tested positive for Ebola earlier this week.