Centers for Disease Control and Prevention staffers are voicing frustration over Health Secretary Robert F. Kennedy Jr.’s past vaccine comments, following Friday’s shooting at the agency’s headquarters in Atlanta that left one police officer dead. Although the motive of the suspected shooter — Patrick White, 30, from Kennesaw, Georgia — remains unknown, he told a neighbor that he believed the Covid vaccines had made him sick, a source told NBC News on the condition of anonymity.

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