A vaccine for the coronavirus

"The Trump administration has selected five companies as the most likely candidates to produce a vaccine for the coronavirus, senior officials said, a critical step in the White House’s effort to deliver on its promise of being able to start widespread inoculation of Americans by the end of the year.

By winnowing the field in weeks from a pool of about a dozen companies, the government is betting that it can identify the most promising vaccine projects at an early stage, speed along the process of determining which will work and ensure that the winner or winners can be quickly manufactured in huge quantities and distributed across the country.

Noah Weiland and David E. Sanger of The New York Times report that the five companies are Moderna, a Massachusetts-based biotechnology firm, which Dr. Anthony S. Fauci said he expected would enter the final phase of clinical trials next month; the combination of Oxford University and AstraZeneca, on a similar schedule; and three large pharmaceutical companies: Johnson & Johnson, Merck and Pfizer. Each is taking a somewhat different approach.

The announcement of the decision will be made at the White House in the next few weeks, government officials said. Dr. Fauci, the federal government’s top epidemiologist and the director of the National Institute of Allergy and Infectious Diseases, hinted at the action when he told a medical seminar on Tuesday that “by the beginning of 2021, we hope to have a couple of hundred million doses.”"