The U.S. Centers for Disease Control recommends that people with low immunity receive a booster shot of the new crown vaccine

(Fighting New Coronary Pneumonia) The U.S. Centers for Disease Control recommends that people with weakened immunity receive a booster shot of the new crown vaccine

　　China News Agency, Washington, August 13 (Reporter Sha Hanting) The US Centers for Disease Control and Prevention (CDC) said on the 13th local time that it is recommended that people with low immunity receive a booster shot of the new crown vaccine.

　　CDC Director Valensky said in a statement that the delta mutant strain is currently spreading rapidly, and that people with weakened immunity will receive a booster shot of the new crown vaccine to help prevent the "life-threatening new crown severe disease."

　　On the evening of the 12th, the U.S. Food and Drug Administration (FDA) approved a booster shot of the new crown vaccine for people with low immunity.

The vaccines approved by the FDA this time are Pfizer vaccine and Modena vaccine booster, and Johnson & Johnson vaccine is not mentioned.

　　In the CDC's recommendations, people with low immunity include organ transplant recipients, cancer patients, and AIDS patients.

The CDC recommends that these groups receive booster shots of the same vaccine at least 28 days after completing the two doses of Pfizer or Modena vaccine.

　　CDC experts said that there is currently a lack of sufficient data to support people with low immunity to receive booster shots after receiving Johnson & Johnson vaccine. The CDC and the FDA are conducting research on this issue and will give guidelines as soon as possible.

　　CDC data shows that the proportion of people with low immunity among American adults is only 2.7%, but about 44% of hospitalized cases of "breakthrough infection" of the new crown.

"Breakthrough infection" refers to a pathogen breaking through the defense line of the vaccine, causing the person who has completed the vaccination to be infected with the disease that the vaccine should prevent.

　　The results of several small studies cited by the CDC indicate that for people with insufficient immune response after vaccination, the new crown vaccine booster may help their immune system to produce antibodies.

Studies have shown that 16% to 80% of people with weakened immunity have not detected new coronavirus antibodies after receiving two doses of the vaccine.

Among those who did not detect antibodies, 33% to 50% developed antibodies after the booster shot.

(Finish)