Centers for Disease Control and Prevention Director Rochelle Walensky is shaking up the agency’s Covid-19 response to consolidate oversight amid mounting criticism over its guidance for vaccinated people, according to three senior health officials with the knowledge of the situation. The changes in recent weeks include creating a clear reporting chain from the new director of the agency’s vaccine task force — which helped rewrite rules for mask-wearing — up to Walensky. The head of that task force had originally reported to both CDC and the White House. Walensky has also reshuffled the CDC’s pandemic modeling and data, analytics and visualization task forces... The loss of two longtime CDC leaders combined with Walensky’s reshaping of the Covid-19 response is solidifying the CDC chief’s power, giving her control over some of the most critical policy conversations related to the pandemic. The changes she has made are also reinforcing her agency’s independence from the White House. As POLITICO has reported, several senior White House officials — including some on the White House Covid-19 task force — said the CDC did not warn them until the morning of the announcement that vaccinated people can forego masks in most situations.