"The San Francisco public health department found two cases of H5N1 avian flu at a live poultry market and DNA traces in wastewater, but there are no signs of p

"The San Francisco public health department found two cases of H5N1 avian flu at a live poultry market and DNA traces in wastewater, but there are no signs of public exposure or illness. Two chickens at a live bird market in San Francisco tested positive for H5N1 avian flu last month, authorities announced Monday." --Summary from Google