† Data from Laboratory Response Network laboratories and 4 commercial laboratories using the CDC non-variola orthopoxvirus assay, and one commercial laboratory using a non-variola orthopoxvirus and mpox multiplex assay.
§ Positivity rate based on specimens tested, not patients. Most patients have multiple specimens tested. Positivity rate is calculated as (number of positive specimens)/(number of positive + negative specimens) per week. Results that are equivocal or inconclusive are not included. Changes in the week-to-week positivity rates may be related to sample size. Estimates derived from small sample sizes should be interpreted with caution.
# Total includes all test results: equivocal, inconclusive, negative, positive.
Line-listed data replaced aggregate data for one commercial laboratory beginning with the week ending 7-16-2022. This resulted in updates to the number of specimens tested and positivity rates during these weeks.