Yasmeen Abutaleb

The suit is the second patent fight over the development of the messenger RNA shot.

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A Washington Post survey of the 20 largest school districts found that few are offering robust coronavirus testing amid vague guidelines and a surge of cases that few anticipated.

Critics say the CDC’s failure to share real-time data led to overly rosy assessments of vaccine effectiveness — and complacency on the part of many Americans.

The document captures the struggle of the nation’s top public health agency to persuade the public to embrace vaccination and prevention measures, including mask-wearing, as cases surge across the United States and new research suggests vaccinated peop…

The recommendation will change guidance by the agency in May saying that vaccinated individuals did not have to wear masks indoors or out because of protection afforded by vaccines.

Federal health officials sounded an alarm Friday about a surge in infections fueled by the twin threats posed by the highly transmissible delta variant and a stagnation in efforts to vaccinate as many Americans as possible.

Top U.S. health officials have not decided whether boosters will be necessary.

The theory that the virus came from a lab in Wuhan, China, has gained traction amid criticism of an international probe and reports that several workers there were ill in November 2019 — weeks before the virus was officially identified.

The relaxation of restrictions incentivizes people to get the shots and helps paves the way for a full reopening of society.