Why the tick-borne disease threat is changing in the UK

The threat from ticks and tick-borne disease is shifting in ways veterinary teams can’t treat as static, especially in the UK. Recent public health surveillance shows that about 4% to 6% of ticks tested in England and Wales carry the bacteria that can cause Lyme disease, while 1,581 laboratory-confirmed human Lyme disease cases were reported in 2024. At the same time, canine babesiosis remains a live concern: UK guidance notes that ongoing cases continue to be found in dogs without travel history, and earlier published work tied Babesia canis in dogs and ticks to Harlow, Essex, with Dermacentor reticulatus identified as the vector. Referral-center data from 76 UK dogs diagnosed with tick-borne disease also found a small but important number of non-travel-associated ehrlichiosis and babesiosis cases, reinforcing concern that some pathogens once considered imported risks may now be appearing through local transmission. Exposure intensity also matters: outside the UK, recent farm-worker research from the northeastern US found an average of three tick encounters over six months, with some workers reporting as many as 70, underscoring how heavy environmental exposure can become in high-risk settings. (gov.uk)

Why it matters: For veterinary professionals, this is a surveillance and case-recognition story as much as a parasite-control story. Lyme borreliosis remains the better-known zoonotic risk, but babesiosis and other vector-borne infections deserve attention even in dogs with no travel history, particularly when compatible signs such as fever, anemia, lethargy, thrombocytopenia, or shifting lameness are present. The occupational-health literature also reinforces the practical point that repeated tick exposure can be substantial for people working outdoors, with consequences that can be serious. UK guidance and professional groups have increasingly emphasized vigilance, tick identification, travel and import histories, and prevention planning that reflects geography, seasonality, and the possibility of changing tick distribution. (esccapuk.org.uk)

What to watch: Expect continued focus on surveillance, imported-disease controls, and whether localized UK foci of non-endemic tick-borne pathogens expand or remain contained. Rising attention to heavy exposure in outdoor settings may also sharpen One Health messaging around tick checks, prompt removal, and risk communication for clients whose work or recreation puts them in frequent tick habitat. (gov.uk)