This bill allows certain small businesses whose gross receipts do not exceed $1 million a refundable portion of the tax credit for increasing research activities if such businesses are engaging in specified medical research. It defines specified medical research as any qualified research with respect to qualified countermeasures. A qualified countermeasure is a drug, biological product, or device that is determined to be a priority (1) to diagnose, mitigate, prevent, or treat harm from any biological agent (including organisms that cause an infectious disease) or toxin, chemical, radiological, or nuclear agent that may cause a public health emergency affecting national security; (2) to diagnose, mitigate, prevent, or treat harm from a condition that may result in adverse health consequences or death and may be caused by administering a drug, biological product, or device; or (3) is a product or technology intended to enhance the use or effect of a drug, biological product, or device.