sick Get a flu shot - even if they don't work By Lisa Johnson • Jan 10, 2018 Tom Woodward/Flickr Dr. Andrew Thompson is really frustrated. He knows flu shots aren't perfect; he knows they're only 40-60% effective and that makes them hard to promote. But the alternative, he says, can be worse. Blue-green algae: "When in doubt, stay out" By Lisa Johnson • Jun 8, 2016 Here's the thing about blue-green algae: it's really a cyanobacteria. You can't identify it by sight or smell, but it could make you sick. Unless you're a dog, in which case, it could kill you.