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This vaccine will require two doses to work, injections that must be given weeks apart. Scientists anticipate the shots will cause enervating flu-like side effects — including sore arms, muscle aches and fever — that could last days and temporarily sideline some people from work or school.

Historically, important scientific announcements about vaccines are made through peer-reviewed medical research papers that have undergone extensive scrutiny about study design, results and assumptions, not through company press releases. So did Pfizer’s stock deserve its double-digit percentage bump? The answers to the following five questions will help us know.

Lowering the Medicare eligibility age is popular. About 85% of Democrats and 69% of Republicans favor allowing those as young as 50 to buy into Medicare. Although opposition from the hospital industry is expected to be fierce, that is not the only obstacle to Biden’s plan.

The Department of Veterans Affairs is recruiting 8,000 volunteers for the Phase 3 clinical trials of at least four COVID-19 vaccine candidates at 20 federal medical facilities across the U.S.

The Supreme Court on Tuesday will hear oral arguments in a case that, for the third time in eight years, could result in the justices striking down the Affordable Care Act.

Without a Democratic majority in the Senate, Biden will likely face strong Republican opposition to many of his top health agenda items — including lowering the eligibility age for Medicare to 60, expanding financial assistance for health insurance under the Affordable Care Act, and creating a “public option” government health plan.

Nationwide, surveys have found increasing rates of depression, anxiety and suicidal thoughts during the pandemic. But many medical experts said it’s too soon to measure the related physical symptoms, since they generally appear months after the stress begins.

Black Philadelphians contract the coronavirus at a rate nearly twice that of their white counterparts. They also are more likely to have severe cases of the virus: African Americans make up 44% of Philadelphians but 55% of those hospitalized for COVID-19.

Dozens of vaccine candidates are in various testing stages around the world, with 11 in the last stage of preapproval clinical trials — including four in the U.S. One or more may prove safe and effective and enter the market in the coming months. What then?

Breaking up parties, confiscating booze and answering noise complaints — being a resident adviser has always required a willingness to be the “bad guy” and uphold university policy. Now there’s a new element to the job description: COVID cop.