The numbers will not match the daily reports from the State of Massachusetts for several reasons:
- Results are reported to the organization that sent the sample to us for testing. The sending institution must then report the results to the Massachusetts Department of Public Health, together with individual demographic data it has collected.
- A small number of people are tested more than once (for example, as a confirmation or re-test). The figures here reflect the number of tests performed, not the number of people tested. The State reports the number of people.
- Broad Institute processes some tests from other states.
The "percent positive" pertains to the tests submitted to Broad. Because different organizations use different criteria for selecting individuals for testing, it is not possible to draw meaningful conclusions about infection rates or trends from these data.
The Clinical Research Sequencing Platform, LLC is a subsidiary of the Broad Institute.