By Mark Memmott
World Health Organization flu expert Keiji Fukuda briefed reporters this morning in Geneva. We listened and posted updates here. Click your "refresh" button to make sure you're seeing our latest additions:
11:47 a.m. ET: The news conference just ended.
11:42 a.m. ET: After being asked about the transmission of the disease from a farm hand in Alberta, Canada, to pigs there and whether the disease could then come back to infect people, Fukuda says that "in this instance, we are very clear that pork and pork products. when they are handled right and cooked properly do not pose a risk of infection to people."
And, Fukuda adds, "the people who are getting infected are not getting infected from pigs."
But, he says, WHO is continuing to look at whether there's a chance that animal-to-human transmission might become a problem.
11:34 a.m. ET: "There's not a timetable," Fukuda says, after being asked when the virus might show up in significant numbers in the southern hemisphere. "There's no timetable for how viruses like this spread out."
11:29 a.m. ET: "We expect that you will have peaks of activity in some places ... valleys of activity in some places," Fukuda says, as he cautions that the outbreak will likely ebb in parts of the world even as it picks up in others. "It's a mixed picture. This is what we have seen in other pandemics."
11:20 a.m. ET: More on the issue of what a "phase 6" declaration would mean. Fukuda says the goal is to "capture how far" the virus is spreading. It is not by itself a measure of the flu's severity.
11:11 a.m. ET: As it considers whether to raise its outbreak status from "phase 5" to "phase 6," Fukuda says, WHO is looking for "evidence of sustained community transmission" in other regions of the globe (beyond North America). It is also watching for signs that the cases are not almost all "travel related," he says.
11:06 a.m. ET: "We're not quite certain how this is going to evolve," Fukuda cautions. But, he adds, "this is the best surveillance we've ever had" -- so authorities are closely monitoring the outbreak.
11:05 a.m. ET: Fukuda says WHO's latest figures show 1,025 confirmed cases in 20 countries. The death toll stands at 26.