About 40 per cent of community tuberculosis cases remain undetected stockbot 0 8 03.23 08:46 https://vietnamnews.vn/society/1652536/about-40-per-cent-of-community-… + 0 https://vietnamnews.vn/rss/society.rss + 0 In some areas, the high-risk group exhibits extremely high tuberculosis rates, reaching 400 to 500 cases per 100,000 people.