 Complete the following phrase:  In early 2005, the World Health Organization WHO began investigating an outbreak of viral hemorrhagic fever in Angola, which was centered in the northeastern Uíge Province but also affected many other provinces. The Angolan government had to ask for international assistance, pointing out that there were only approximately 1,200 doctors in the entire country, with some provinces having as few as two. Health care workers also complained about a shortage of personal protective equipment such as gloves, gowns, and masks. Médecins Sans Frontières MSF reported that when their team arrived at the provincial hospital at the center of the outbreak, they found it operating without water and electricity. Contact tracing was complicated by the fact that the countrys roads and other infrastructure were devastated after nearly three decades of 