Third graders' mold experiment reveals fungus that grew on s
Ziploc bags of bread that's gone blue, green and yellow with mold from a third grade science experiment shows just how dirty unwashed hands and laptops really are.

Cold and flu season presents a battleground for teachers trying to keep their students - and themselves - healthy by encouraging hygiene among notoriously resistant kids.

So teacher Dayna Robertson and behavior specialist Jaralee Metcalf at Discovery Elementary School in Idaho Falls decided to try a little hands-on instruction.

They had all 17 members of their third grade class handle slices of bread with clean, unwashed and hand sanitizer-disinfected hands. They also compared those to a piece that was wiped on a class laptop and another that was untouched.

After a month, the germs had done their dirtiest, splotching the bread that was touched with dirty hands in green white and yellow mold, turning nearly the entire laptop-wiped slice a deep, gross aquamarine and even dotting an edge of the hand sanitizer bread in rings of orange, yellow and blue.

Only the untouched, control bread was essentially pristine, but the bread the students touched after washing their hands with soap and water was the clear next best thing.

Every year as the flu sweeps the US, 20 percent of Americans fall ill. Children are particularly susceptible to some strains of the virus because their immune systems are still meeting and developing defenses to previously unfamiliar viruses and bacteria. And they can easily spread germs to the other children and adults around them.

The same is true of norovirus - sometimes called the 'winter vomiting sickness' - which has sickened so many kids at two US schools this season that the schools had to close down to be disinfected.

For flu, the vaccine can give you a shot at immunity. But if you're around strains of the virus the shot doesn't work against, any of the other 200 viruses that cause the common cold or other bacteria, the Centers for Disease Control and Prevention and teachers everywhere urge that hand washing is your best bet for keeping illnesses from spreading.

'And hand sanitizer is not an alternative to washing hands!! At all!' Jaralee noted after seeing the gross results of her class's experiment.

When it's 60 percent alcohol, hand sanitizer can kill many germs - but it's not substitute for good old fashioned soap and warm water. That's because it's not just the germ-killing power of soap that makes hand-washing effective, but the mechanical removal of viruses and bacteria from the skin.

Its effectiveness was plain to see on he slice of bread that even after being handled and stashed for a month had only just begun to get a little white mold in its center.

And the laptop-rubbed bread was a sobering reminder that our surfaces need to be cleaned regularly, too, as they're clearly teeming with nasty germs.

Source: https://www.dailymail.co.uk/health/article-7807007/Third-graders-disgusting-moldy-bread-hand-washing-experiment-goes-viral.html
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Dec 25, 2019Like