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Effectiveness of different types of mask.Colin
Greek Minesweeper Kallisto” 'cut in two' by Maersk Launceston:https://kefaloniapulse.homeinkefalonia.properties/how-kallisto-was-cut-in-two-investigations-into-the-causes-of-the-accident-the-captain-of-the-merchant-ship-was-arrested?fbclid=IwAR2vCpCHJK24EalFNKaSnfUEErkGcP2buWW-KQfbsj7_EdASrtxpKNX1avIhttps://gcaptain.com/containership-maersk-launceston-and-greek-minesweeper-collide-off-piraeus/<iframe width="560" height="315" src="https://www.youtube.com/embed/7VrWyjVBjBA" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
There you go:https://thorax.bmj.com/The image was posted on another forum I belong to by a member with medical expertise concerning the effectiveness of masks.Colin
No offence meant but it's important to know where the info comes from these days so we can read for ourselves, not just to blindly re-tweet (I believe that's what it's called!?).