Most flu viruses have two genetic elements, but H1N1 has four. Last week, the World Health Organization raised the alert level for the virus, whose formal name is H1N1, indicating that a € pandemic is imminent. Share your thoughts on this column at the Well blog. Two types of swine flu, a bambie flu and some human flu genes, said Dr.

It € no wonder, with all the seemingly mixed messages coming out of health agencies and news organizations. Why is everyone so concerned about this one. Regular flu kills 150 people a day during flu season.

Fishman, an infectious-disease.

Answers on Flu Confused about swine flu. € Now, health officials report that although the virus is widespread, most cases seem to be mild. It € good news that the imminent threat appears to be abating, but questions remain about the virus and whether it will re-emerge in the Southern Hemisphere or back in North America next fall. This is a new and unusual virus.

People are being told not to panic, but schools in some communities remain closed.