Viral Gain - of-Function Research Moratorium Act This bill prohibits the award of federal research grants to institutions of higher education or research institutes that conduct gain-of-function research. Gain-of-function research refers to any research that (1) could confer attributes to influenza, MERS, or SARS viruses such that the virus would have enhanced pathogenicity or transmissibility in an organism; or (2) involves methods that could enhance potential pandemic pathogens or related risky research with potentially dangerous pathogens.