. >> the kroen virus is spreading this evening. beijing has gathered large gatherings on the eve of the new year. the most important holiday on the chinese calendar. >> 830 people are infected and 25 have died. five people are being test in the europe. roughly 25 million people are quarantined. that's about two-thirds of the population of california. the economic impact of the outbreak is starting to be felt in the bay area. >> especially people with travel plans that would take them from sfo to asia. one says people with paid trims will be losing thousands of dollars. the david? >> reporter: you know, no doubt that researchers are intending to scramble as fast as they can to learn whatever they can about the transmission of the new coronavirus. that means those traveling to china or have plans to do so in a quaunldory. they don't want to be the next to get the virus. some have pre paid as much as $10,000, even more. china has extended it. the uncertainty of the how far it will spread and how long it will last creates anxiety for a