A/H1N1 pandemic spreads at unprecedented speed, says WHO 2009-07-17 06:10:40 GENEVA, July 16 (Xinhua) -- The A/H1N1 influenza pandemic has been spreading at an unprecedented speed, much faster than other pandemics in history, the World Health Organization (WHO) said on Thursday. "In past pandemics, influenza viruses have needed more than six months to spread as widely as the new H1N1 virus has spread in less than six weeks," the UN agency said in a briefing posted on its website. The new flu virus has caused more than 94,500 laboratory-confirmed infections in more than 130 countries and regions, with more than...