Screwworm Returns to Texas: How This Parasite Could Impact Beef Prices Nationwide (2026)

After 148 past bullish disease events, Live Cattle moved a median +0.4% over 5 sessions (62% higher; middle half -0.5% to +1.2%), and +1.4% over 20.

• Jun 2, 2025How flesh-eating screwworms in cattle could raise US beef prices | Reuters+3.1%
• Jun 25, 2026The screwworm parasite continues to spread in Texas, threatening cattle and wildlife : NPR-2.9%
• Jun 5, 2026US races to contain flesh-eating parasite screwworm, reports no further cases+0.4%
• Jun 4, 2026Texas Ranchers Brace as New World Screwworm Returns to US Soil After 6 Decades+0.6%
• Jun 3, 2026Flesh-eating screwworm confirmed in Texas calf as parasite crosses border from Mexico | Reuters+0.0%

After 122 past bullish disease events, Feeder Cattle moved a median +0.4% over 5 sessions (60% higher; middle half -1.0% to +1.6%), and +2.0% over 20.

• Jun 2, 2025How flesh-eating screwworms in cattle could raise US beef prices | Reuters+3.8%
• Jun 25, 2026The screwworm parasite continues to spread in Texas, threatening cattle and wildlife : NPR-2.4%
• Jun 5, 2026US races to contain flesh-eating parasite screwworm, reports no further cases+1.8%
• Jun 4, 2026Texas Ranchers Brace as New World Screwworm Returns to US Soil After 6 Decades+3.4%
• Jun 3, 2026Flesh-eating screwworm confirmed in Texas calf as parasite crosses border from Mexico | Reuters+1.6%