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A wildlife team covers a young buck's head with a cloth to help calm it before testing the deer for the coronavirus and taking other biological samples in Grand Portage, Minn. on Wednesday, March 2, 2022. Scientists are concerned that the COVID-19 virus could evolve within animal populations âÄ“ potentially spawning dangerous viral mutants that could jump back to people, spread among us and reignite what for now seems like a waning crisis. (KEYSTONE/AP Photo/Laura Ungar)