Shielding the vulnerable did little to reduce COVID-19 among the at-risk, study finds Shielded people had a slightly higher known infection rate—5.9% versus 5.7%—compared with controls. CIDRAP

Shielding, a public health strategy used across the United Kingdom in the early months of the pandemic, aimed to keep the most vulnerable citizens protected from the novel coronavirus at home and away from public-facing jobs and schools. But a new study of Welsh citizens published in the May issue of Public Health shows the strategy did little to prevent infection in this group.

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