THE HILL
Cases of three major respiratory viruses — the flu, COVID-19 and RSV — are surging in the U.S., pushing the country toward a feared “tripledemic” during its first post-pandemic respiratory viral season.
Optimism was high this autumn as the U.S. headed into the viral season. The national arsenal against these viruses had vaccines against RSV for the first time, newly updated COVID-19 vaccines, and the flu “immunity debt” that plagued children in 2022 was history.
But now, confidence is waning. Accessing the vaccine for RSV, or respiratory syncytial virus, has been a struggle for many, and enthusiasm for the new COVID-19 vaccines turned out to be abysmal. COVID-19 hospital admissions have been rising since November and wastewater detection indicates most sites — 69 percent — are seeing large increases in virus levels.
Flu activity across the country is currently “elevated and continues to increase in most parts of the country,” according to the latest update from the Centers for Disease Control and Prevention (CDC). And vaccine uptake for the flu seems to be lagging, with the CDC saying nearly 8 million fewer people got the shot by mid-December compared to the same period in 2022.
During the first couple of years of the pandemic, flu activity remained low, attributed to the precautionary measures that communities took to mitigate the viral spread of COVID. The 2022-23 flu season appeared to mark a return to normal flu levels.
Only about a fifth of U.S. adults say they’ve received the newest COVID-19 shot, according to polling from KFF. Uptake for the previous bivalent shots was similarly low and many Americans likely haven’t been immunized since receiving their first doses in 2020 or 2021.
“We’re definitely seeing an increase in the number of flu cases, COVID-19. They’re both surging right now,” said Luis Ostrosky, chief of infectious diseases and epidemiology with UTHealth Houston and Memorial Hermann.
