https://www.youtube.com/channel/UC5Ot-VlC1x7xxzEnY2OK3-w1.0360https://www.youtube.com/videoYouTube480https://i.ytimg.com/vi/Jj8uxZvPj9o/hqdefault.jpg480270Guard against infections Always wash your hands衞生署衞生防護中心, CHP, Department of Health, HKSARG<iframe width="480" height="270" src="https://www.youtube.com/embed/Jj8uxZvPj9o?feature=oembed" frameborder="0" allowfullscreen></iframe>