Table 9.

Numbers of reported cases of laboratory-acquired parasitic infections caused by blood and tissue protozoa, by country or region of the world where the case occurreda

Geographic areaNo. of cases of infection with:Total no. (% of 164; % of 123b)
Leishmania spp. (n = 12)Plasmodium spp. (n = 34)Toxoplasma gondii (n = 47)Trypanosoma cruzi (n = 65)Trypanosoma brucei subspp. (n = 6)
United States620238057 (34.8; 46.3)
Europe112203541 (25.0; 33.3)
Latin America30015018 (11.0; 14.6)
Asia111003 (1.8; 2.4)
Australia/New Zealand011002 (1.2; 1.6)
Canada100001 (0.6; 0.8)
Africa000011 (0.6; 0.8)
Unknown00239c 041 (25.0; NAd)
 United States620238057 (34.8; 46.3)
 Other areas6142218666 (40.2; 53.7)
 Unknown00239c 041 (25.0; NA)
  • a The data represent cases, not rates, and do not account for the numbers of laboratorians at risk in the various regions. Therefore, they may simply reflect the amount of research done, in the regions, on particular parasitic diseases. The geographic areas are listed by descending frequency (see last column). A total of 164 cases are included in the table.

  • b Percentages are also provided using the number of cases with available data as the denominator.

  • c Brener did not provide data for most of the cases that he tallied in his reviews (22; Brener, Letter).

  • d NA, not applicable.