Of the 4,000 hospital staff, about 160 will be tested for polonium-210 contamination, the UK Health Protection Agency said. Italian reporter Mario Scaramella, who in the first days of the investigation the press “listed” as the main suspect, also underwent examination. No traces of polonium-210 were found in his body. In general, there was a slight panic in London in connection with polonium. More than 500 people, who immediately discovered all the signs of poisoning, called the medical service hotline.