US public health body quietly changes testing guidance

The US public health body, the Centers for Disease Control and Prevention (CDC), has quietly tweaked its testing guidance to say that people who’ve been in close contact with someone known to have Covid-19 now “do not necessarily” need to get tested.

Before, the CDC said anyone with recent or suspected exposure to the virus should be tested, even if they had no symptoms.

Now, the guidance says that in this situation “you do not necessarily need a test unless you are a vulnerable individual or your health care provider or state or local public health officials recommend you take one”.

It comes as cases continue to fall in the US – a trend that experts say is at least partly due to a drop in the number of tests being carried out.

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