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In this week's Science, an international team led by investigators at the UK's Medical Research Council Laboratory of Molecular Biology shows that "genetic information can be stored in and recovered from six alternative genetic polymers — xeno-nucleic acids, or XNAs, which are not found in nature.

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According to BBC News, the global vaccine-sharing initiative has sent its first shipment, which arrived in Ghana this week.

CNN reports that a US Food and Drug Administration document says Johnson & Johnson's SARS-CoV-2 vaccine meets the requirements to receive an Emergency Use Authorization.

Researchers in France are developing a new, fast test for SARS-CoV-2 that initial testing indicates may be highly accurate, the Guardian says.

In Cell this week: analysis of fitness patterns among SARS-CoV-2 isolates, single-cell transcriptome analysis of immune features in COVID-19, and more.