Answer and Discussion of Quiz Set: C-002

2.    The percentage of seropositivity for Toxoplasma gondii in the general population in the the U.S. is around what percentage?

A.  100%

B.  Around 85%

C.  Around 25%

D.  Around 10%

E.  Around 2-3%

Answer and Discussion: The answer is (D). According to the study by Jones, JL et al., the age ajusted T. gondii seroprevalence among persons 6-49 years old was 10.8%, and among women 15-44 years old was 11.0%. There was a decline in comparison to a previous study.

Reference:

Jones JL, Kruszon-Moran D, Sanders-Lewis, Wilson M. Toxoplasma gondii infection in the United States, 1999 2004, decline from the prior decade. Am J Trop Med Hyg. 2007 Sep;77(3):405-10.