By now, you are probably aware that NBC Olympics anchor Bob Costas has pink eye,
and it's getting worse. What I didn't realize: Pink eye is a symptom, not a diagnosis. It's
an infection of the lubricating cells that line your eye,
but lots of things can cause that infection, including staph and strep
bacteria, chlamydia, and rhinovirus. Those are common causes of pink
eye, but there are some more exotic ones out there, as well. It was the
most common symptom of
the emergent flu strain H7N7 when that virus infected 89 people in the Netherlands in 2003. There are even three viruses that can cause
acute hemorrhagic conjunctivitis, a sort of uber-pink eye that is, thankfully, not nearly as dangerous as it sounds.
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