Latest from Ben Guarino

CDC’s mask guidance spurs confusion and criticism, as well as celebration

Telling vaccinated people they can discard their masks signals the power of the shots, but critics say the move is hasty and difficult to implement with a majority of Americans still unprotected.
  • May 14, 2021

Vaccinated? Great. But wear a mask when indoors or in crowds, experts say.

The CDC recommendations for mask-wearing among fully vaccinated people — who can take them off in private but should wear them in public — are "absolutely appropriate," one expert said.
  • Apr 27, 2021

Can you spread the coronavirus if you’re vaccinated? Post reporters answer your questions.

Send us your questions and Post reporters will respond with answers on Monday, April 19.
  • Apr 19, 2021

WHO report leaves unsettled ‘lab-leak’ theory on origins of covid pandemic

The director of the World Health Organization may have breathed new life into the theory, often dismissed as a political distraction, that the coronavirus came from a lab in China.
  • Mar 30, 2021

Coronavirus question: Who should get a coronavirus test?

Not absolutely everyone needs to take one — but more than those showing symptoms should get them.
  • Mar 30, 2021

Biden, health officials sound alarm as signs of covid surge proliferate

Case counts are up, and younger people who are not yet vaccinated are being hospitalized with severe coronavirus infections.
  • Mar 29, 2021

Biden urges states to reimplement masks after CDC director said she’s ‘scared’ about rising cases

CDC director Rochelle Walensky issued an emotional warning Monday about rising caseloads in the U.S., describing a feeling of “impending doom.”
  • Mar 29, 2021

A harmless vaccine side effect could mimic cancer in mammograms. Here’s what to know.

Enlarged lymph nodes can be a side effect of vaccination for some people. As harmless as vaccine-swollen nodes are, those in the armpit may appear as alarming white spots in a mammogram.
  • Mar 19, 2021

CDC releases new workplace testing guidance

The CDC advised testing as a screening strategy rather than simply a diagnostic one in an effort to help identify and isolate asymptomatic clusters in workplaces, schools and group settings.
  • Mar 17, 2021

Some long-haul covid-19 patients say their symptoms are subsiding after getting vaccines

Little is known about the people who suffer debilitating symptoms for months, and even less about why the vaccine may be helping some
  • Mar 16, 2021