CWD found in park deer
Wildlife officials confirmed the first cases of chronic wasting disease in deer at Catoctin Mountain Park, adding to a wider 2026 pattern that also includes cases at Gettysburg National Military Park. (heraldmailmedia.com) That finding matters for hikers and park managers because CWD can reshape herd health and influence long‑term wildlife management and visitor advisories. (heraldmailmedia.com)
Chronic wasting disease just turned up in two white-tailed deer at Catoctin Mountain Park, marking the first confirmed cases inside that park after disease sampling during deer reduction operations. (nps.gov) Chronic wasting disease is caused by a misshapen protein called a prion, which works like a bad template that makes other proteins fold the wrong way in a deer’s brain and nervous system. (nps.gov) Infected deer can lose weight, act abnormally, and eventually die, and the National Park Service says the disease is always fatal in members of the deer family. (nps.gov) Catoctin Mountain Park had already been managing deer for years because hunting is prohibited there and heavy browsing can wipe out young trees before a forest can replace itself. (nps.gov) The park says deer management at Catoctin began in February 2010, and later monitoring found a 19-fold increase in tree seedlings after years of reducing an overabundant herd. (nps.gov 1) (nps.gov 2) That made the disease test especially consequential, because the same operations used to protect the forest are now also showing where chronic wasting disease has reached. (nps.gov 1) (nps.gov 2) Catoctin is not an isolated case in this region. The park said Antietam National Battlefield, Monocacy National Battlefield, and Harpers Ferry National Historical Park got their first positive tests in 2024, and Gettysburg National Military Park followed in 2026. (nps.gov) Gettysburg’s March 5, 2026 announcement said two deer tested positive there during reduction operations at Gettysburg National Military Park and Eisenhower National Historic Site. (nps.gov) Maryland’s wildlife agency already treats chronic wasting disease as a statewide management problem, and its current guidance says the Chronic Wasting Disease Management Area was expanded in 2025 to include Howard County. (dnr.maryland.gov) For visitors, the park’s advice is practical rather than dramatic: chronic wasting disease is a deer-management issue first, so the visible changes are more likely to be continued monitoring, deer operations, and park notices than trail closures for ordinary hiking. (nps.gov 1) (nps.gov 2) For managers, the harder part is time. A disease that kills deer and a herd large enough to suppress forest regrowth push the park in the same direction: keep testing, keep counting, and keep treating deer health and forest health as the same problem. (nps.gov) (nps.gov)
