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Table 1 Yearly prevalence

From: Seasonality and changing prevalence of common canine gastrointestinal nematodes in the USA

Year Total samples Roundworm positive (%) Hookworm positive (%) Whipworm positive (%)
2012 4,327,474 83,802 (1.94) 87,484 (2.02) 36,120 (0.83)
2013 4,652,951 84,284 (1.81) 90,449 (1.94) 37,946 (0.82)
2014 5,016,643 88,950 (1.77) 99,195 (1.98) 39,996 (0.8)
2015 5,515,328 101,278 (1.84) 122,372 (2.22) 46,262 (0.84)
2016 6,164,315 115,844 (1.88) 156,291 (2.54) 46,868 (0.76)
2017 6,777,847 127,732 (1.88) 182,955 (2.7) 46,964 (0.69)
2018 7,187,002 125,835 (1.89) 212,860 (2.96) 48,300 (0.67)