Foto de stock - Employee of a microbiological laboratory of the Trutnov Hospital evaluates tests for COVID-19, on November 29, 2021, in Trutnov, Czech Republic. (CTK Photo/David Tanecek)

Imagen: Employee of a microbiological laboratory of the Trutnov Hospital evaluates tests for COVID-19, on November 29, 2021, in Trutnov, Czech Republic.

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