SOURCES: CHRISTINE K. JOHNSON, PETA L. HITCHENS, PRANAV S. PANDIT, JULIE RUSHMORE, TIERRA SMILEY EVANS, CRISTIN C.W. YOUNG, AND MEGAN M. DOYLE,“ GLOBAL SHIFTS IN MAMMALIAN POPULATION TRENDS REVEAL KEY PREDICTORS OF VIRUS SPILLOVER RISK,” PROCEEDINGS OF THE ROYAL SOCIETY B; CDC; WHO