A medical worker checks the temperature of a foreign visitor to the China Import and Export Fair, also known as Canton Fair, in Guangzhou yesterday. People attending the fair will be taken to designated hospitals for further observation if their temperatures are above 37.5 degrees Celsius, as the authorities step up the fight against Ebola, which has killed thousands of people in West African countries. The second section of the 116th Canton Fair opened yesterday with hundreds of thousands of buyers from Africa and other parts of the world. Xinhua