We assessed risk factors for AIV (H5N1) contamination in LBMs. We compared exposures in 39 LBMs with a minimum of 1 contaminated environmental site to 44 LBMs with no contamination. From the univariate analyses, several exposures predicted AIV (H5N1) contamination in LBMs (Table 3) . LBMs with wooden tables, Muscovy ducks, or >200 ducks other than Muscovy were at greater risk for AIV (H5N1) contamination, as were LBMs in West Java province.