In addition to PPE, essential medicines are another critical component of preparedness. How do purchasers currently identify domestic PPE and domestic essential medicines? On average, what percentage of a hospital's total drug costs are for essential medicines (or each subcategory of essential medicines)? For essential medicines (or each subcategory of essential medicines), do commenters agree with the assumption for purposes of the illustrative example that essential medicines are generally 1 percent of drug costs? What would be an appropriate estimate for the higher costs of domestically produced essential medicines compared to non-domestic essential medicines?