Tick abundances in South London parks and the potential risk for Lyme borreliosis to the general public
C. NELSON,
S. BANKS,
C. L. JEFFRIES,
T. WALKER and
J. G. LOGAN
Abstract
Tick abundances and prevalences of infection with Borrelia burgdorferi sensu lato, the causative agent of Lyme disease, were investigated in four South London parks. A total of 360 transects were sampled using three methods of collection (blanket, leggings and flags) simultaneously. No ticks were found on Wimbledon Common or at Hampton Court, but 1118 Ixodes ricinus (Ixodida: Ixodidae) ticks were collected at Richmond and Bushy Parks. At Richmond Park, lower canopy humidity [odds ratio (OR) 0.94; P = 0.005], increased mat depth (OR 1.15; P < 0.001) and increased soil moisture (OR 1.40; P = 0.001) predicted the presence of I. ricinus, and increased sward height [incidence rate ratio (IRR) 1.01; P = 0.006] and decreased ground temperature (IRR 0.90; P = 0.009) predicted increased abundance. At Bushy Park, thicker mat depth predicted tick presence (OR 1.17; P = 0.006) and increasing temperature correlated with tick absence (OR 0.57; P = 0.023). A total of 279 ticks were screened for the presence of B. burgdorferi using quantitative polymerase chain reaction. Point prevalences of 0% for larvae (n = 78), 2.14% for nymphs (n = 174) and 0% for adult ticks (n = 7) related to an acarological risk of 0.22 infected ticks per 40 m transect in Richmond Park. The abundance of ticks and the acarological risk, particularly at Richmond Park, highlight the need for appropriate communication of the associated risk to the general public frequenting these recreational areas.
Interesting research on ticks in London Parks by researchers from the London school of Hygiene & Tropical medicine.
James Logan has discussed his research in the media recently to help raise awareness of ticks and possible tick borne infections - Lyme Disease.
Science daily - 'Dr James Logan, Senior Lecturer in Medical Entomology at the London School of Hygiene & Tropical Medicine, senior author of the study said: "The overall risk of Lyme disease in London parks is very low, but precautions should be taken. Check yourself and your pets after frequenting parkland areas, and remove any ticks as quickly as possible using a tick removal tool. To minimise the risk stick to footpaths and wear an insect repellent."
Hopefully more such important work will be done and more awareness raised of Lyme Disease.
In 1994
Tick abundances and prevalences of infection with Borrelia burgdorferi sensu lato, the causative agent of Lyme disease, were investigated in four South London parks. A total of 360 transects were sampled using three methods of collection (blanket, leggings and flags) simultaneously. No ticks were found on Wimbledon Common or at Hampton Court, but 1118 Ixodes ricinus (Ixodida: Ixodidae) ticks were collected at Richmond and Bushy Parks. At Richmond Park, lower canopy humidity [odds ratio (OR) 0.94; P = 0.005], increased mat depth (OR 1.15; P < 0.001) and increased soil moisture (OR 1.40; P = 0.001) predicted the presence of I. ricinus, and increased sward height [incidence rate ratio (IRR) 1.01; P = 0.006] and decreased ground temperature (IRR 0.90; P = 0.009) predicted increased abundance. At Bushy Park, thicker mat depth predicted tick presence (OR 1.17; P = 0.006) and increasing temperature correlated with tick absence (OR 0.57; P = 0.023). A total of 279 ticks were screened for the presence of B. burgdorferi using quantitative polymerase chain reaction. Point prevalences of 0% for larvae (n = 78), 2.14% for nymphs (n = 174) and 0% for adult ticks (n = 7) related to an acarological risk of 0.22 infected ticks per 40 m transect in Richmond Park. The abundance of ticks and the acarological risk, particularly at Richmond Park, highlight the need for appropriate communication of the associated risk to the general public frequenting these recreational areas.
Interesting research on ticks in London Parks by researchers from the London school of Hygiene & Tropical medicine.
James Logan has discussed his research in the media recently to help raise awareness of ticks and possible tick borne infections - Lyme Disease.
Science daily - 'Dr James Logan, Senior Lecturer in Medical Entomology at the London School of Hygiene & Tropical Medicine, senior author of the study said: "The overall risk of Lyme disease in London parks is very low, but precautions should be taken. Check yourself and your pets after frequenting parkland areas, and remove any ticks as quickly as possible using a tick removal tool. To minimise the risk stick to footpaths and wear an insect repellent."
Hopefully more such important work will be done and more awareness raised of Lyme Disease.
In 1994
Evidence for Lyme disease in urban park workers: a potential new health hazard for city inhabitants.Rees DH1, Axford JS.
Abstract
http://www.parliament.uk/business/publications/hansard/lords/todays-lords-debates/read/grandcommittee/674/
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