The Los Angeles County health agency suggested to residents that they wear masks—regardless of vaccination status—due to the so-called “Delta” COVID-19 variant.
The county’s recommendation comes about two weeks after Democrat Gov. Gavin Newsom lifted California’s mask mandate and ended lockdown provisions in the state.
But the agency said that the mask recommendation—which is not a mandate—is being issued because officials don’t know the exact effects or the transmission rate of the Delta variant. They also suggested that the variant might be able to lead to breakthrough COVID-19 cases among vaccinated individuals
“While COVID-19 vaccine provides very effective protection preventing hospitalizations and deaths against the Delta variant, the strain is proving to be more transmissible and is expected to become more prevalent,” L.A. County Public Health Director Barbara Ferrer said in a statement. “Mask wearing remains an effective tool for reducing transmission, especially indoors where the virus may be easily spread through inhalation of aerosols emitted by an infected person.”
The county also recommended that residents should focus on “maximum protection with minimum interruption to routine as all businesses operate without other restrictions, like physical distancing and capacity limits.”
However, some have said that the concerns about the Delta strain are overblown.
Separately, pharmaceutical giant Moderna said that its two-dose mRNA COVID-19 vaccine works against the Delta strain, which will likely be used in future arguments against new masking or lockdown mandates.
“These new data are encouraging and reinforce our belief that the Moderna COVID-19 Vaccine should remain protective against newly detected variants,” CEO Stéphane Bancel said in a press release issued on Tuesday about the findings.