>> ALL RIGHT, TRACKING IT ALL WEEK LONG FOR US. ROB, THANK YOU. >>> NEW, TO THE SO-CALLED TRIPLEDEMIC SWEEPING ACROSS THE COUNTRY. FLU, COVID, RSV, STRIKING ALL AGES NOW. IN FACT, 80% OF THE NATION'S HOSPITAL BEDS HERE IN THE U.S. ARE NOW FULL. TONIGHT, OUR TEAM AT ONE EMERGENCY ROOM, WHERE PATIENTS THERE ARE WAITING 12 HOURS JUST TO BE SEEN. ABC'S MIREYA VILLARREAL FROM TEXAS TONIGHT. >> Reporter: TONIGHT, HEALTH OFFICIALS ARE WARNING THAT TRIPLEDEMIC OF FLU, RSV, AND COVID IS NOW HITTING AMERICANS OF ALL AGES. 80% OF ADULT HOSPITAL BEDS ARE NOW FULL, THE HIGHEST PEAK SINCE THE OMICRON SURGE. >> WE ARE SEEING HIGH RATES OF FLU, HIGHER THAN WE'VE SEEN THIS TIME OF YEAR IN OVER A DECADE. >> Reporter: COVID HOSPITALIZATIONS ARE SURGING, TOO. THE CDC DIRECTOR SAYS AMERICANS SHOULD CONSIDER MASKING AND GET THEIR FLU AND COVID VACCINES. >> I WANT TO LIVE TO BE 87 INSTEAD OF 67. SO, THAT'S WHY I'M HERE GETTING MY SHOTS. >> Reporter: AND THAT TRIPLE WHAMMY OF VIRUSES STILL STRAINING PEDIATRIC HOSPITALS LIKE COOK CHILDREN'S IN FORT WORTH, WHERE BED SPACE IS SCARCE. >> RIGHT NOW IN OUR EMERGENCY ROOM, WE HAVE PATIENTS WHO HAVE BEEN WAITING FOR 12-PLUS HOURS TO BE SEEN. OUR HOSPITAL IS FULL, OUR ICU IS FULL, AND THAT'S SCARY, BECAUSE WE KNOW THERE ARE SICK KIDS OUT THERE. >> Reporter: THE STATE OF NEVADA NOW FAST TRACKING LICENSES FOR NURSES TO HANDLE A FLOOD OF PEDIATRIC PATIENTS. LAUREN AND JASON TAYLOR SAY THEY WAITED ALMOST 24 HOURS IN THE E.R. FOR AN OPEN HOSPITAL BED FOR THEIR DAUGHTER, WHO WAS SICK WITH RSV, PNEUMONIA, AND A COLLAPSED LUNG. >> SHE HAD LOW OXYGEN, WHICH THEY CALL HYPOXIA, AND FEVER. ATHEY SAID THEY NEEDED TO ADMIT HER RIGHT AWAY. >> Reporter: 18-MONTH-OLD KYRA HAD JUST GOTTEN OVER THE FLU WHEN SHE HAD TROUBLE BREATHING. >> SO YOU CAN SEE THE BELLY GOING UP. YOU CAN HEAR THE FORCED BREATHING. YOU CAN SEE THE RIBS COMING OUT, AND THEY CALL THIS SEESAW BREATHING. >> Reporter: AFTER FOUR DAYS IN THE HOSPITAL, KYRA'S NOW HOME RECOVERING. DAVID, JUST 40% OF ADULTS SAY THEY'VE GOTTEN THE FLU SHOT. HEALTH OFFICIALS SAY THEY WANT TO SEE THAT NUMBER MUCH HIGHER, BUT THEY UNDERSTAND THERE IS VACCINE FATIGUE RIGHT NOW. THE PROBLEM IS, THEY SAY, A PERFECT STORM IS BREWING. PEOPLE ARE TAKING OFF THEIR MASKS AND HOLIDAY TRAVEL IS RAMPING UP. SO, THEY ARE STRESSING RIGHT NOW, IT IS VERY IMPORTANT FOR YOU TO GET THOSE VACCINES. DAVID? >> YEAH, VACCINE FATIGUE IS UNDERSTOOD, BUT THEY SAY THE FLU VACCINE IS VERY EFFECTIVE THIS YEAR.