The authors selected breast cancer because it has current screening guidelines (e.g., mammograms). Between March and May of 2020, cancer registries recorded far fewer cases than expected. While the rate of new cancer diagnoses hovered around predicted levels in the second half of 2020, it did not make up for the drop seen between March and May.

Observed/Expected Ratio of Female Breast cancer diagnoses by Month of Diagnosis, 2020. Between March and May of 2020, cancer registries recorded far fewer cases than expected. While the rate of new cancer diagnoses hovered around predicted levels in the second half of 2020, it did not make up for the drop seen between March and May.