HIDING BEHIND FACE MASKS IN MEXICO CITY--- AS MORE CASES OF SWINE FLU ARE CONFIRMED. HERE’S THE LATEST: MEXICO HAS SEEN MORE THAN 2 THOUSAND CASES AND AT LEAST 149 DEATHS...WHICH HAS LED TO TRAVEL ADVISORIES. THE NUMBER OF CONFIRMED CASES IN THE U-S IS NOW 48....BUT STILL NO CONFIRMED CASES IN NEW MEXICO. THERE'S A LOT OF TALK OF SWINE FLU RIGHT NOW--- WITH LITTLE UNDERSTANDING OF EXACTLY WHAT IT IS---- AND WHY IS IT CAUSING SO MUCH WORRY .. JOE VIGIL TALKED TO DOCTORS TODAY TO GET SOME ANSWERS. HE JOINS US WITH TONIGHT'S TOP STORY A LOT OF FEAR OUT THERE MAY BE FEAR OF THE UNKNOWN. HEALTH EXPERTS SIMPLY DON'T KNOW A LOT ABOUT SWINE FLU RIGHT NOW. IT'S BEING CALLED A NEW FLU AND A NEW DISEASE. WHEN A WEIRD VIRUS LEAPS OUT OF NOW WHERE AND STARTS KILLING PEOPLE... YOU BET...PEOPLE ARE GOING TO BE SCARED. BUT HERE'S SOME PERSPECTIVE. THE STATE HEALTH DEPARTMENT DOESN'T KEEP TRACK OF THE NUMBER OF FLU CASES A YEAR. BUT DOES SAY 3 TO 4 PERCENT OF SICK PEOPLE IN CLINICS COME IN WITH FLU SYMPTOMS... WHICH COULD POTENTIALLY MEAN THOUSANDS OF FLU CASES A YEAR. AND THE HEALTH DEPARTMENT SAYS ON AVERAGE HUNDREDS OF NEW MEXICANS DIE FROM FLU RELATED ILLNESSES A YEAR. RIGHT NOW THERE ARE ZERO SWINE FLU CASES IN THE STATE. ZERO. THE REASON PEOPLE ARE GETTING JUMPY IS BECAUSE SWINE FLU USUALLY STAYS AMONG PIGS. IT'S A COMMON RESPIRATORY DISEASE IN PIGS THAT'S BEEN AROUND A LONG TIME. IT HAS HAPPENED--- BUT IT'S EXTREMELY RARE FOR A HUMAN TO GET THE DISEASE FROM A SICK PICK... 'AND' IT'S EXTREMELY RARE THAT AN INFECTED HUMAN WOULD PASS THE VIRUS TO ANOTHER PERSON. BUT THAT'S EXACTLY WHAT'S HAPPENING NOW. 'Whenever we have influenza that is new to humans, and is also being transmitted to humans to humans it caused great concern to the medical community and to the public health world.''The primary concern would be that we don't have native immunity to this particular strain of influenza and that it could spread to lots of p...