In the United States, "P. boydii" is the most common causal agent of eumycetoma, and tends to be more common in men than in women, particularly in the 20- to 45-year-old age group. In the United States, the incidence of infection by "S. apiospermum" between 1993 and 1998 was 0.82; this figure increased to 1.33 by 2005. "Pseudallescheria boydii" infection was implicated in the deaths of three athletes injured during the opening ceremony of the 1997 Maccabiah Games when the Maccabiah bridge collapsed in the Yarkon River.