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Toxoplasma gondii in the peripheral blood of patients with ocular toxoplasmosis
  1. Young-Hoon Park
  1. Correspondence to Dr Young-Hoon Park, Department of Ophthalmology and Visual Science, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, #505 Banpo-dong, Seocho-gu, Seoul 137-701, Korea; parkyh{at}

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I would like to thank Silveira et al for their article, ‘Toxoplasmosis gondii in the peripheral blood of patients with acute and chronic toxoplasmosis’.1 It adds new insight to the pathogenesis of the reactivation of ocular toxoplasmosis, which is known to develop at the border of old scars and is attributed to the rupture of tissue cysts located within the old lesions. But sometimes new lesions are found to occur at a distance from the old scar. The exact mechanism of these findings of reactivation in ocular toxoplasmic patients is not known. The authors studied 20 patients including acute infected patients, patients with recurrent active toxoplasmic retinochoroiditis, patients with old toxoplasmic retinal scars …

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  • Competing interests None.

  • Provenance and peer review Not commissioned; internally peer reviewed.