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Before the current outbreak, most infected birds did not show any symptoms, the study said. There has been no poultry vaccination against H7N9.
Beijing's regional GDP hit more than 1.52 trillion yuan (1 billion) in the first half of 2019, growing 6.3 percent year-on-year, and output by the tertiary industry rose 6.5 percent to 1.26 trillion yuan due to the strong contribution of the financial and service sectors, Beijing's statistics authority said.
Before that, investors were already worried about the impact of trade frictions between the world's top two economies after the United States began imposing a 25-percent additional tariff on Chinese products worth billion on last Friday.
Because of the mayhem on Monday, nearly all universities in the city suspended classes.
Beijing subway will use facial recognition technology to classify passengers to help guards take different security check measures, according to a top official of the city's rail traffic control.
来源：资阳报