# Strep Zoo Outbreak Demonstrates Value of African Swine Fever Rule-Out Testing – American Association of Swine Veterinarians

> An outbreak of Streptococcus equi zooepidemicus on a 5,000-sow operation in western Canada killed 69 sows in seven days in the third quarter of 2022. Because the signs mimicked African swine fever, samples were sent for ASF rule-out testing, which confirmed the cause was not ASF.

- Date: 2022-12-14 · published 2022-12-14T12:00:00.000Z
- Category: disease · region Canada · magnitude low
- Page: https://feedsoft.ai/events/16224-strep-zoo-outbreak-demonstrates-value-of-african-swine-fever-rule-out-testing
- Commodities: [Lean Hogs](https://feedsoft.ai/c/HOGS.md)

## Why it matters

The outbreak was localized and not ASF, so it has little effect on hog supply or feed demand. The story mainly highlights the importance of testing protocols for disease surveillance.

## Read by commodity

- HOGS: neutral

## Similar past events

| Commodity | Date | Event | 5-day % | 20-day % |
| --- | --- | --- | --- | --- |
| HOGS | 2018-04-04 | [SHIC’s Global Swine Disease Monitoring Report Addresses FMD – American Association of Swine Veterinarians](https://feedsoft.ai/events/65385-shic-s-global-swine-disease-monitoring-report-addresses-fmd-american.md) | -0.3% | +19.3% |
| HOGS | 2021-07-21 | [Foreign Animal Disease – Page 29 – American Association of Swine Veterinarians](https://feedsoft.ai/events/45947-foreign-animal-disease-page-29-american-association-of-swine-veterinarians.md) | +1.5% | -8.8% |
| HOGS | 2025-05-27 | [One Health Approach: Pork Industry Prepares for H5N1 – American Association of Swine Veterinarians](https://feedsoft.ai/events/16002-one-health-approach-pork-industry-prepares-for-h5n1-american-association-of.md) | +2.6% | +15.1% |
| HOGS | 2019-04-10 | [South Africa reports farm outbreak of African swine fever - OIE](https://feedsoft.ai/events/59456-south-africa-reports-farm-outbreak-of-african-swine-fever-oie.md) | +7.3% | +5.6% |
| HOGS | 2024-09-20 | [Strengthening North America's Defense Against African Swine Fever](https://feedsoft.ai/events/16059-strengthening-north-america-s-defense-against-african-swine-fever.md) | -0.5% | -3.8% |

## Sources

- aasv.org: https://www.aasv.org/2022/12/strep-zoo-outbreak-demonstrates-value-of-african-swine-fever-rule-out-testing/

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Data from Feedsoft AI (https://feedsoft.ai/). For information only; not investment advice.