Yellow fever deaths trigger national health emergency in Colombia

Colombia has announced a health emergency in response to rising deaths from yellow fever. The country's health ministry reported at least 34 deaths and 74 cases of the disease - a dramatic increase over known numbers from previous years. The World's Host Marco Werman speaks to Dr. Andrea Vicari, who leads the Infectious Hazard Management Unit at the Pan American Health Organization, a regional office of the World Health Organization headquartered in Washington.