This is exactly right. Most of the population, particularly in America, have at least partial immunity to the "standard" flu virus from year to year due to immunizations and previous exposures to similar strains. This virus is a completely new strain that has never before been seen by the human population, so essentially no one is immune to it. There was some concern that this strain may, in fact, be more virulent than the standard flu (such as the 1918 and bird flu strains were), but those concerns are, as of yet, unconfirmed. That's not to say the possibility doesn't still exist though. So we should be aware but the media is blowing this way out of proportion?