How many cumulative year-to-date US resident cases of pertussis (aka whooping cough) will the CDC report as of Week 52 of 2025?
Closed Dec 27, 2025 08:01AM UTC
Cases of pertussis in the US jumped in 2024 (CDC, CNN). The total number of cases in 2024 reported through Week 52 (week ending 28 December 2024) was 35,435, which was higher than the 7,063 total for 2023 reported as of the end of 2024 (CDC Stacks - Pertussis Week 52 2024). The question will be suspended on 26 December 2025 and the outcome determined using data as first reported by the CDC for the week ending 27 December 2025 (CDC Stacks, select "Pertussis" under "Topics" and "2025" under "Publication Year" to limit search results, and see "U.S. Residents, excluding U.S. Territories"). Please note that the CDC changed its reporting from "Wonder" to "Stacks" in January 2025, so the procedure for accessing the data has changed from previous questions.
Confused? Check our FAQ or ask us for help. To learn more about Good Judgment and Superforecasting, click here.
To learn more about how you can become a Superforecaster, see here. For other posts from our Insights blog, click here.
The question closed "At least 26,000, but fewer than 30,000" with a closing date of 28 December 2025.
See our FAQ to learn about how we resolve questions and how scores are calculated.
| Possible Answer | Correct? | Final Crowd Forecast |
|---|---|---|
| Fewer than 18,000 | 1% | |
| At least 18,000, but fewer than 22,000 | 1% | |
| At least 22,000, but fewer than 26,000 | 1% | |
| At least 26,000, but fewer than 30,000 | 92% | |
| At least 30,000, but fewer than 34,000 | 3% | |
| At least 34,000, but fewer than 38,000 | 1% | |
| At least 38,000, but fewer than 42,000 | 1% | |
| At least 42,000, but fewer than 46,000 | 0% | |
| At least 46,000, but fewer than 50,000 | 0% | |
| At least 50,000, but fewer than 54,000 | 0% | |
| At least 54,000, but fewer than 58,000 | 0% | |
| 58,000 or more | 0% |
Crowd Forecast Profile
| Participation Level | |
|---|---|
| Number of Forecasters | 26 |
| Average for questions older than 6 months: 154 | |
| Number of Forecasts | 199 |
| Average for questions older than 6 months: 458 | |
| Accuracy | |
|---|---|
| Participants in this question vs. all forecasters | average |
