President-elect Biden implores Americans to wear masks amid vaccine progress

WILMINGTON, Delaware (AP) — President-elect Joe Biden is imploring Americans to wear masks to slow the spread of the coronavirus — even as he cheered news about the promising development of a vaccine being developed by pharmaceutical giant Pfizer.
Biden, in remarks after meeting with his newly formed coronavirus advisory board, cautioned that Americans still face “a dark winter” and need to be aggressive about mask wearing and social distancing as infections continue to s