As mutations of the coronavirus spread, some specific protective methods and combinations, which are considered more effective, are being suggested to the public. The US Centers for Disease Control and Prevention (CDC) recommended the use of two masks simultaneously. The goal is to prevent contagion from the more contagious SARS-CoV-2 variants detected in the UK, Brazil, and South Africa.
According to the guidelines announced by the CDC, it is recommended to use a reusable mask on top of a surgical mask, which is disposable.
Alternatively, it is recommended to use a mask considered to be of high protection, such as FFP2 masks, with a reinforcement so that it is firmly attached, in order to completely block the entry of SARS-CoV-2 droplets.
Both methods have been shown to be effective in reducing the likelihood of infection in about 95 percent of laboratory tests, the CDC notes.
The United States is the country most affected by the pandemic in terms of coronavirus-related infections and deaths, having radically changed its strategy to mitigate the spread of the virus with the beginning of Democrat Joe Biden’s administration. The US president announced the mandatory use of personal protective equipment in transportation, a decision that until now was only required of conductors.
The new recommendations come at the same time as the country is experiencing an increase in the number of infections caused by multiple variants of the virus.