Welcome back, panic. We've missed you since 2009, when H1N1 was declared a "national emergency," turning legions of us into the kinds of people who wash our hands raw and open bathroom doors with paper towels.

Six have died of H1N1 in Washington state in the past two weeks and an infectious disease specialist at North Shore Long Island Jewish Hospital in New York would like to remind you that H1N1 can be fatal to "young adults who would not be otherwise vulnerable."

People have been killed by and hospitalized for H1N1 in Michigan, California, Texas, Oregon, Utah, and North Carolina.

If you're looking for a flu shot near you, try this vaccine finder by ZIP code. (The link is to a King County Public Health site, but the ZIP code search function connects to a national database.)

Fun fact—when it comes to swine flu, we're more dangerous to the pigs than the pigs are to us:

"Although in the early stages of the swine flu pandemic there were worries that humans would catch the virus from pigs, this has so far not been documented and pigs and other animals have not been involved in the current spread of A/H1N1 influenza in humans," said Dr Vahlenkamp, "However, with the increasing numbers of human infections, a spill over of this human virus to pigs is becoming more likely. The prevention of human-to-pig transmissions should have a high priority in order to avoid involvement of pigs in the epidemiology of this pandemic".