Journal
LIFE-BASEL
Volume 11, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/life11121310
Keywords
tick-borne-diseases; climate change; Borrelia spp; northwest Italy; zoonosis; ticks
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The study conducted in Piedmont and Aosta Valley, Italy from 2009 to 2018 analyzed the transmission of Lyme disease by ticks. The results showed a yearly increase in positive Western blot tests, consistent with a trend of rising temperatures and humidity.
Ticks are hematophagous parasites that can transmit a variety of human pathogens, and their life cycle is dependent on several climatic factors for development and survival. We conducted a study in Piedmont and Aosta Valley, Italy, between 2009 and 2018. The study matched human sample serologies for Borrelia spp. with publicly available climatic and meteorological data. A total of 12,928 serological immunofluorescence assays (IFA) and Western blot (WB) tests were analysed. The median number of IFA and WB tests per year was 1236 (range 700-1997), with the highest demand in autumn 2018 (N = 289). In the study period, positive WB showed an increasing trend, peaking in 2018 for both IgM (N = 97) and IgG (N = 61). These results were consistent with a regional climatic variation trending towards an increase in both temperature and humidity. Our results suggest that coupling data from epidemiology and the environment, and the use of a one health approach, may provide a powerful tool in understanding disease transmission and strengthen collaboration between specialists in the era of climate instability.
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