For people living in the southern hemisphere, don't feel too smug about all the comments that this only affects people 'in northern latitudes'. What they mean

For people living in the southern hemisphere, don't feel too smug about all the comments that this only affects people 'in northern latitudes'. What they mean is 'the northern parts of North America'. If you're south of the equator by, say, 35-40 degrees or more - similar risks & problems apply.