Although only about one person in ten with a positive skin test or blood assay ever develops. TB disease, the risk continues throughout the rest of your life. The symptoms of TB are. common to many other illnesses.
Marco Polo-Great Silk Road. For many centuries the Great Silk Road connected a complex network of trade routes from Europe with Asia. It was a way to establish contact with the great civilizations of China, India, the Near East and Europe.
Marco Polo's father and uncle returned to Venice when he was 15 years old. Two years later, when they set off again for China, they decided to take Marco with them. Students will take a âvirtualâ trip with Marco Polo from Venice to China and back.