BA.5 can evade immunity, but there’s a key reason it will still cause a tell-tale pink line.
Though BA.5 is great at sneaking past vaccines and even immunity from prior infections, researchers say that rapid tests can probably still detect BA.5—after all, they’ve worked on all the other variants. But aside from the usual caveat to take a negative test with a grain of salt, there are some snags in rapid testing to be aware of as the pandemic wears on.
This difference has to do with the progression of the virus. Each variant has different “tissue tropisms,” meaning that they enter different parts of the body at different points in the infection. With later variants, you might feel the virus in some parts of your body before you have enough of it in your nose to show up on a test.
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