Volume 13, Number 4—April 2007
Letter
Toxoplasma gondii Prevalence, United States
Jeffrey L. Jones*
, Deanna Kruszon-Moran†, and Marianna Wilson*
, Deanna Kruszon-Moran†, and Marianna Wilson*Table
Comparison ofToxoplasma gondii IgG antibody seroprevalence, NHANES 1999–2000 and NHANES III (1988–1994)*†
| NHANES 1999–2000 | NHANES III (1988–1994) | |||||
|---|---|---|---|---|---|---|
| N‡ | Prevalence | 95% CI | N‡ | Prevalence | 95% CI | |
| Total | 4,234 | 14.3 | 12.3–16.2 | 11,132 | 16.0 | 14.5–17.5 |
| Sex | ||||||
| Male | 2,013 | 15.2 | 12.4–18.0 | 5,144 | 16.7 | 14.8–18.6 |
| Female | 2,221 | 13.4 | 11.2–15.5 | 5,988 | 15.3 | 13.5–17.0 |
| Race/ethnicity | ||||||
| Non-Hispanic white | 1,293 | 10.8 | 8.1–13.6 | 3,304 | 14.3 | 12.5–16.2 |
| Non-Hispanic black | 1,027 | 16.8 | 13.4–20.3 | 3,674 | 18.0 | 16.1–19.8 |
| Mexican American | 1,553 | 14.2 | 10.1–18.4 | 3,661 | 18.3 | 16.7–20.0 |
| Age group, y | ||||||
| 12–19 | 2,105 | 7.3 | 4.7–10.0 | 2,749 | 8.5 | 6.4–10.5 |
| 20–29 | 735 | 11.9 | 9.5–14.4 | 3,100 | 15.2 | 12.1–18.3 |
| 30–39 | 726 | 17.0 | 12.9–21.2 | 2,960 | 16.1 | 14.6–17.6 |
| 40–49 | 668 | 18.7 | 15.0–22.3 | 2,323 | 22.2 | 19.4–25.0 |
| Country of birth | ||||||
| United States | 3,211 | 10.5 | 8.3–12.8 | 8,606 | 14.1 | 12.7–15.5 |
| Not United States | 995 | 32.0 | 24.0–39.9 | 2,493 | 27.9 | 24.1–31.7 |
*IgG, immunoglobulin G; NHANES, National Health and Examination Survey; CI, confidence interval.
†Sex, race/ethnicity, and total values are age-adjusted to the 2000 census–estimated population using the 4 age categories shown.
‡Totals for the race/ethnicity and country-of-birth categories do not add up to the total number because of an “other” category (not shown)
or because persons did not provide a response to country-of-birth questions.
