Amid COVID-19 pandemic, flu has disappeared in the US

February 25, 2021
This Saturday, Oct. 17, 2020 file photo shows influenza vaccine syringes at the L.A. Care Health Plan and Blue Shield of California Promise Health Plan's Community Resource Center's Free Drive-Thru vaccination event in Los Angeles. (AP Photo/Damian Dovarganes)

NEW YORK (AP) — February is usually the peak of flu season, with doctors’ offices and hospitals packed with suffering patients. But not this year.

Flu has virtually disappeared from the U.S., with reports coming in at far lower levels than anything seen in decades.

Experts say that measures put in place to fend off the coronavirus — mask wearing, social distancing and virtual schooling — were a big factor in preventing a “twindemic” of flu and COVID-19.

A push to get more people vaccinated against flu probably helped, too, as did fewer people traveling, they say.

Another possible explanation: The coronavirus has essentially muscled aside flu and other bugs that are more common in the fall and winter.

Scientists don’t fully understand the mechanism behind that, but it would be consistent with patterns seen when certain flu strains predominate over others, said Dr. Arnold Monto, a flu expert at the University of Michigan.

Nationally, “this is the lowest flu season we’ve had on record,” according to a surveillance system that is about 25 years old, said Lynnette Brammer of the U.S. Centers for Disease Control and Prevention.

Hospitals say the usual steady stream of flu-stricken patients never materialised.

The numbers are astonishing considering flu has long been the nation’s biggest infectious disease threat.

In recent years, it has been blamed for 600,000 to 800,000 annual hospitalisations and 50,000 to 60,000 deaths.

More than 190 million flu vaccine doses were distributed this season, but the number of infections is so low that it’s difficult for CDC to do its annual calculation of how well the vaccine is working, Brammer said.

There’s simply not enough data, she said.

Across the globe, flu activity has been at very low levels in China, Europe and elsewhere in the Northern Hemisphere. 

And that follows reports of little flu in South Africa, Australia and other countries during the Southern Hemisphere’s winter months of May through August.

The story of course has been different with coronavirus, which has killed more than 500,000 people in the United States.

COVID-19 cases and deaths reached new heights in December and January, before beginning a recent decline.

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