3 minute lesson
3 minute lesson
3ML
Washing your hands | Hygiene
3 minutes Posted May 5, 2020 at 4:00 am.
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Episode 32. Topic: Washing your hands. Theme: Hygiene. We've all been told to wash our hands for 20 seconds (especially given the pandemic). But why 20 seconds and what does hand washing actually do to viruses and bacteria?