Winnipeg lab researcher potentially exposed to Ebola has been cleared

In this undated colorized transmission electron micrograph file image made available by the CDC shows an Ebola virus virion. (Frederick Murphy / CDC via AP)

WINNIPEG -- A Winnipeg lab researcher who was potentially exposed to the Ebola virus has been cleared to return to work.

The employee was working with six infected pigs at the National Centre for Foreign Animal Disease in early November when he noticed a rip in his protective suit.

The researcher was given an Ebola vaccine and put into isolation for 21 days.

The Canadian Food Inspection Agency says the employee did not show any symptoms during that time and has been cleared to return to work.

The agency says several internal reviews found the lab met international standards.

But the agency says it has tightened rules around protective suits and enhanced training for employees.