The United Kingdom has granted emergency use authorization for the Pfizer-BioNTech COVID-19 vaccine and ordered 40 million doses, enough to vaccinate 20 million people. The initial 800,000 doses should be available by next week. (CNN)

The Centers for Disease Control and Prevention is suggesting that quarantine time following possible exposure to COVID-19 can be reduced from 14 days to 10 days in some cases, and as few as seven days with a negative test result. The agency has also issued guidelines for the distribution of COVID-19 vaccines, recommending that residents and employees of nursing homes and healthcare workers be given priority. These suggestions are not binding on states, though they typically follow CDC directives. (CNBC, The Washington Post

Several recent studies have raised concerns about the accuracy of rapid COVID-19 tests when administered to people 18 and younger. In a recent one, Abbott’s Binax NOW rapid test caught 96.5% of coronavirus infections in adults but only 77.8% in minors. (The New York Times)

Five weeks after its buyout of AskBio, Bayer outlined its plans for a cell and gene therapy platform. The company hopes the move will propel the company’s C&GT business. (Endpoints News)

C2N Diagnostics has started marketing a blood test to diagnose Alzheimer’s disease. The test has yet to receive FDA approval, however, and skeptics would like the company to publish its study results. (USA Today