The World Health Organization has resumed work in Angola to track new cases of the deadly Marburg virus, which has killed more than 180 people.

The WHO says several teams are in the town of Uige following up with anyone who had contact with infected people recently. The agency also has special teams to remove the bodies of those who succumbed to the virus.

The organization suspended operations last week after fearful residents stoned United Nations' vehicles and attacked medical staff.

Seven of Angola's 18 provinces have been affected by the Marburg outbreak. The virus spreads through contact with any bodily fluid, and can kill rapidly.