Last year, the CDC posted a document on its website reviewing the so-called shielding approach for limiting the number of severe COVID-19 cases in “humanitarian settings,” such as camps for displaced people. The CDC document, which is titled “Interim Operational Considerations for Implementing the Shielding Approach to Prevent COVID-19 Infections in Humanitarian Settings,” does not endorse the strategy, but instead explains the rationale and raises several potential concerns with it. “In theory, shielding may serve its objective to protect high-risk populations from disease and death,” the CDC document reads. Fulce explained that the CDC weighed in on the shielding strategy because the agency sees it as part of its job for its global response to the pandemic. “CDC advises careful review of these limitations and ethical issues before considering the use of shielding to prevent the spread of COVID-19.