De Soto vaccine manufacturing expansion
Merck Animal Health, De Soto, Johnson County, Kansas
De Soto vaccine manufacturing expansion in De Soto, Kansas is Merck Animal Health’s plant for biologic animal vaccines (filling and freeze-drying). Status: announced as of May 8, 2025. Merck Animal Health announced $895 million and 200 jobs. Primary source: kansascommerce.gov, checked November 12, 2026.
- Status
- Announced
- Announced investment
- $895 million
- Announced jobs
- 200
- Industry
- Pharmaceuticals
- Sheet
- KS-20
- Revised
- November 12, 2026
Status timeline
- Announcedkansascommerce.gov
Filled dots are confirmed by a company, state, SEC or federal source. Dashed dots come from news reports only. Investment and job figures are as announced, not achieved.
Plant facts
| Company | Merck Animal Health |
|---|---|
| Plant | De Soto vaccine manufacturing expansion |
| Location | De Soto, Johnson County, Kansas |
| Industry | Pharmaceuticals |
| Product | Biologic animal vaccines (filling and freeze-drying) |
| Announced investment | $895 millionIncludes $860M manufacturing facility and $35M R&D labs |
| Announced jobs | 200 |
| Last checked | November 12, 2026 |
Sources
- Merck Animal Health investing $895M in De Soto plant expansion (state release, kansascommerce.gov, checked November 12, 2026)
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