It is recommended to wear a mask even after the completion of vaccination in the United States.

The US Centers for Disease Control and Prevention has set new guidelines to encourage people who have completed vaccination with the new coronavirus vaccine to wear masks indoors in areas of severe infection.

In May, the US government said that it would not be necessary to wear a mask if the vaccination was completed, but the policy was changed in just two months following the spread of the mutant virus confirmed in India.

In the United States, the seven-day average number of infected people reported per day exceeded 50,000 as of the 26th, an increase of more than 50% over the previous week.

According to the CDC, it is estimated that the mutant virus "Delta strain" confirmed in India accounts for 80% of infected cases on the 27th, and the number of infected people exceeds a certain level even for those who have completed vaccination. In some areas, we have announced new guidelines to encourage indoor mask wear.

The guidelines cover 39 states and regions, including metropolitan cities such as Washington, New York, and Los Angeles.

"The Delta strain has rarely been confirmed to infect people who have completed vaccination," Warensky, director of the CDC, said in a telephone interview and repeatedly called for the vaccine to be effective enough.

In May, President Biden said that those who completed the vaccination did not have to wear a mask in principle, but the rapid expansion of Delta stocks forced them to switch in just two months.

President Biden "I want you to follow the guidelines"

President Biden issued a statement saying, "The announcement of the CDC is a new step towards defeating the virus. People living in the target area should follow the guidelines."

He added, "The most effective defense against Delta strains is vaccination. In areas where Delta strains are widespread, vaccination and wearing masks have led to lockdowns, suspension of economic activity and school closures last year. You can avoid the confusion that has occurred. "

In a press conference prior to the announcement, White House spokesman Saki said that the CDC had changed policy in just two months: "Delta stocks were almost non-existent in May. CDC data We are only changing the guidelines as we change. Our goal and responsibility is to save the lives of our citizens, and the health authorities are responsible for reviewing the guidelines for good reason. "