BERLIN—The Berlin hospital treating a woman for an infectious disease said Tuesday it's unlikely the patient has Ebola, after emergency services in the German capital deployed around 60 police, medics and firefighters to lock down the job center she collapsed in.

"The doctors assume an infectious gastrointestinal illness," Manuela Zingl, a spokeswoman for the Berlin Charité hospital, said in a statement, adding the hospital still has to carry out blood tests to rule out the deadly virus that has claimed more than...