Prolonged and intense rainfall periods are significantly associated with the reactivation of toxoplasmic retinochoroiditis.
2.
However, retinochoroiditis is the most common manifestation, occurring in 3 / 4 of cases.
3.
Others believe that serology is useful to confirm active toxoplasmic retinochoroiditis, not only by showing positivity but by also showing a significant elevation of titers : The mean IgG values were 147.7 ?25.9 IU / ml for patients with active disease versus 18.3 ?20.8 IU / ml for normal individuals.
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