As of this date, the CDC guidelines, which were designed to protect children, teachers, school staffers and their families — no matter the state and no matter the politics — have not been altered. It is not unusual for CDC guidelines to be changed or amended during a clearance process that moves through multiple agencies and the White House. But it is extraordinary for guidelines to be undermined after their release. Through last week, and into Monday, the administration continued to cast public doubt on the agency’s recommendations and role in informing and guiding the nation’s pandemic response. On Sunday, Education Secretary Betsy DeVos characterized the CDC guidelines as an impediment to reopening schools quickly rather than what they are: the path to doing so safely. The only valid reason to change released guidelines is new information and new science — not politics.

One of the many contributions the CDC provides our country is sound public health guidance that states and communities can adapt to their local context — expertise even more essential during a pandemic, when uncertainty is the norm. The four of us led the CDC over a period of more than 15 years, spanning Republican and Democratic administrations alike. We cannot recall over our collective tenure a single time when political pressure led to a change in the interpretation of scientific evidence.