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Volume 17, Number 5—May 2011

Research

Babesiosis in Lower Hudson Valley, New York, USA

Julie T. JosephComments to Author , Sumith S. Roy, Navid Shams, Paul Visintainer, Robert B. Nadelman, Srilatha Hosur, John Nelson, and Gary P. Wormser
Author affiliations: Author affiliations: New York Medical College, Valhalla, New York, USA (J.T. Joseph, S.S. Roy, N. Shams, R.B. Nadelman, S. Hosur, J. Nelson, G.P. Wormser); Baystate Health System, Springfield, Massachusetts, USA (P. Visintainer)

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Table 2

Selected demographic and clinical features and laboratory test results for 18 adults with babesiosis hospitalized at Westchester Medical Center, Valhalla, New York, USA, 2002–2009*

Characteristic Value
Mean age, y, ± SD (range) 54.1 ± 20.1 (21–95)
Male, no. (%) 13 (72.2)
Mean time from symptom onset to diagnosis, d, ± SD (range) 13.6 ± 9.28 (3–33)
Recollection of tick bite within 30 d, no. (%), n = 16 3 (18.8)
Temperature >38°C, no. (%) 15 (83.3)
Splenomegaly, no. (%), n = 13 2 (15.4)
Mean initial parasitemia, %, ± SD (range), n = 17† 4.49 ± 4.57 (0.01–14)
Mean highest level of parasitemia, %, ± SD (range), n = 17† 5.34 ± 5.79 (0.05–18)
Mean initial leukocyte count × 109/L,± SD (range), n = 17 7.2 ± 3.38 (3.2–15.4)
Lymphocyte count <1,000 ×106/L, no. (%), n = 12 5 (41.6)
Mean hemoglobin minimum, g/dL,± SD (range) 8.2 ± 1.98 (3.5–11.1)
Mean platelets minimum, × 109/L, ± SD (range) 110.8 ± 139.2 (19–615)
Platelets minimum <150 × 109/L, no. (%) 16 (88.9)
Mean initial erythrocyte sedimentation rate, mm/h,± SD (range), n = 9 76.7 ± 33.3 (32–138)
Mean initial lactate dehydrogenase, U/L, ± SD (range), n = 15 931.5 ± 562 (229–2074)
Mean initial aspartate aminotransferase, U/L, ± SD (range) 237.7 ± 366.9 (19–1450)
Initial aspartate aminotransferase >30 U/L, no. (%) 14 (77.8)
Mean initial alanine aminotransferase, U/L, ± SD (range) 110.2 ± 111 (16–433)
Initial alanine aminotransferase >40 U/L, no. (%) 13 (72.2)
Mean initial total bilirubin, mg/dL, ± SD (range) 3.4 ± 5.59 (0.4–24.6)
Initial total bilirubin >1.2 mg/dL, no. (%) 10 (55.6)
Mean serum sodium minimum, meq/L, ± SD (range), n = 17 127.6 ± 10.1 (94–139)
Mean creatinine maximum , ng/mL, ± SD (range), n = 17 1.3 ± 0.59 (0.7–2.7)

*Data were obtained from all 18 patients unless otherwise indicated.
†For 1 patient with a positive smear, the level of parasitemia is unknown.

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