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The Season Flu By

Scott LaFee on

We're wrapping up a second full flu season in the middle of a pandemic, and like 2020-2021, the latest season has proven to be thankfully light, with just 5.2 hospitalizations for the flu per 100,000 people -- the lowest rate in years.

It's a good thing because new findings suggest the vaccine developed for this season was not a particularly good match for prevailing strains. Flu shots did not reduce the risk of mild or moderate flu caused by the H3N2 virus, though it's not clear yet whether they prevented severe flu outcomes.

Each year, flu vaccine developers must predict which viral strains are likely to be most prevalent and plan accordingly. Efficacy typically ranges between 40% and 60%.

Body of Knowledge

The human eye may not rival those of some animals, but it's still very sensitive to light, able to detect even a handful of photons or light particles. On a dark, clear night, it can see a candle flame flickering up to 30 miles away and perceive city lights hundreds of miles distant. The farthest object visible with the naked eye is the Andromeda galaxy, located 2.6 million light-years from Earth.

Get Me That, Stat!

 

One in 10 children in the United States experiences food insecurity: Limited or uncertain availability of safe and nutritionally adequate foods, according to the National Health Interview Survey.

Counts

44.5: Percentage of U.S. adolescents and adults in 2007 who visited the dentist in the past year

42.1: Percentage who did so in 2012

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