Supermodel Naomi Campbell visited a Rio de Janeiro blood donor center on Tuesday (April 15) to support the fight against a dengue fever epidemic. However, her offer to give blood was rejected. Campbell said she was turned down because she had a surgery in February.         Wearing a white "Rio Against Dengue" T-shirt, the supermodel went on to advise Rio residents on how to combat the outbreak, which has killed about 50 people and made nearly 60,000 sick in the city. At least 80 people have died of the mosquito-borne disease in Rio de Janeiro state. However, now the  outbreak is under control with cases falling sharply and smaller lines of infected people outside clinics in the city.         Campbell called herself Rio's ambassador and demanded government action. "I love Brazil. I am the ambassador of Rio. It's not about blaming everybody, I think the government needs to find a solution, improve hospital condition to curtail the growing menace," said the 37-year-old model, who is a frequent visitor to Brazil.         The potentially fatal hemorrhage form of dengue has left hospitals facing a shortage of blood for transfusions. Health experts have criticised authorities for allowing large mosquito populations to form, especially in poor areas of the tourist city that have borne the brunt of the case and for being unprepared for an outbreak. Known for her fiery temper, Campbell hit the headlines last week, when she was escorted off a British Airways flight in London and was arrested on suspicion of assaulting a police officer. ... read more »