Efforts to curb the spread of tuberculosis worldwide are making "gradual headway," but "serious problems" remain in combating the disease in Africa and among people living with HIV/AIDS, according to a World Heath Organization report released last Thursday in observance of World TB Day, AFP/Yahoo! News reports. In its annual report, titled "Global Tuberculosis Control - Surveillance, Planning, Financing," WHO estimated that in 2003 - the latest year for which data are available - there were approximately 8.8 million new cases of TB worldwide.