EFEBy Eduard Ribas i Admetlla Washington

As the United States faces a record wave of coronavirus infections and hospitalizations due to the spread of the highly transmissible Omicron variant, health authorities around the country are in the crosshairs due to confusion surrounding how many days to isolate if exposed and facemask use.

The contradictory messages were repeated on Wednesday at the White House's weekly press briefing on Covid-19, where President Joe Biden's coronavirus team was unable to clarify what kind of facemask people should use to protect themselves against the new variant.

The director of the US Centers for Disease Control and Prevention (CDC), Dr. Rochelle Walensky, denied that her agency is studying whether to recommend that Americans use a "better quality" facemask and said that, in effect, "any" mask is better than no mask at all.