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Table 4 Gaps in our knowledge related to surrogate selection and model parameters.

From: Identifying experimental surrogates for Bacillus anthracis spores: a review

Gaps Recommended action
No quantitative comparisons of spore survival on fomites Conduct experiments using steel, laminar, plastic and other surfaces
No quantitative comparisons of spore survival in soil Conduct experiments across soil types
No quantitative comparisons of spore survival in buffer/water Conduct survival experiments in water or buffer
No long-term studies Perform spore survival studies that are over a year long
Only one comparative study examining the effect of heat in various buffers Reconfirm results
Only one comparative study with UV Reconfirm results
Only a few studies with virulent Bacillus anthracis Use virulent B. anthracis and compare directly to potential surrogates