New Delhi, May 26 -- Ugandan health authorities on Monday reported two new Ebola cases, bringing the number of infections to seven.

All the cases are linked to the outbreak in neighboring Congo, which appears to have started several days or weeks before Congolese authorities declared it on May 15.

A 59-year-old Congolese man was admitted to a hospital in Kampala, the Ugandan capital, on May 11, and died three days later, before it was known he was suffering from the Ebola virus. Two other Congolese nationals who sought medical care in Uganda later tested positive for Ebola.

Ugandan health authorities on Saturday confirmed the first local infections: a driver and a health worker exposed to the Congolese patient who died on May 11. Two m...