WHO says existing vaccines and treatments are unlikely to provide quick protection against the Sudan strain .
Diana Atwine, permanent secretary at Uganda’s Health Ministry, said a 24-year-old man was found to have been infected with the Sudan strain of Ebola.
KAMPALA, Uganda—Uganda declared an outbreak of a relatively rare strain of the Ebola virus on Tuesday, raising concerns of a wider spread because existing vaccines are unlikely to provide quick protection against this version of the virus.