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Toxoplasmosis, Past Infection/Unable to Classify
2024 Case Definition

Toxoplasmosis, Past Infection/Unable to Classify
2024 Case Definition
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NOTE: A surveillance case definition is a set of uniform criteria used to define a disease for public health surveillance. Surveillance case definitions enable public health officials to classify and count cases consistently across reporting jurisdictions. Surveillance case definitions are not intended to be used by healthcare providers for making a clinical diagnosis or determining how to meet an individual patient’s health needs.

Subtype(s)

  • Congenital Toxoplasmosis
  • Toxoplasma gondii
  • Toxoplasmosis
  • Toxoplasmosis, Active- Primary Infection
  • Toxoplasmosis, Active- Reactivation Disease

Laboratory Criteria

Presumptive Laboratory Evidence:

  • Detection of Toxoplasma-specific IgG antibodies in blood.

Note: The categorical labels used here to stratify laboratory evidence are intended to support the standardization of case classifications for public health surveillance. The categorical labels should not be used to interpret the utility or validity of any laboratory test methodology.

Case Classification

Confirmed

  • Meets toxoplasmosis presumptive laboratory evidence AND
  • Criteria for probable or confirmed active toxoplasmosis (primary infection or reactivation disease) or congenital toxoplasmosis are not already met.

Related Case Definition(s)

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Last Reviewed: February 28, 2024
Source: Office of Public Health Data, Surveillance, and Technology