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. 2023 Apr 27;38(3):395–400. doi: 10.1017/S1049023X23000481

Table 1.

Number of Events Involving Chemical, Biological, Radiological, or Nuclear Agents and Combinations in Events Involving Mixed Agents

Event Agent Number of Events
Chemical Only 380 (67.3%)
Biological Only 74 (13.1%)
Radiological Only 40 (7.1%)
Nuclear Only 11 (2.0%)
C+B+R+N 1 (0.2%)
C+B+R 4 (0.7%)
C+B+N 1 (0.2%)
C+R+N 1 (0.2%)
C+B 42 (7.4%)
C+R 5 (0.9%)
B+R 1 (0.2%)
R+N 5 (0.9%)

Abbreviations: C, chemical; B, biological; R, radiological; N, nuclear.