Johnson & Johnson (Johnson) Announced on Wednesday Booster dose Its one-time COVID vaccine showed a “strong” response to the highly infectious Delta variant.
The drugmaker said that after two phase 1/2a studies of approximately 2,000 people who had previously received a single dose of the vaccine, the booster injection produced a “rapid and strong increase in spike-binding antibodies.”
Johnson & Johnson said that within 28 days after the booster injection, the antibody increased by 9 times.
Mathai Mammen, the global head of research and development at Johnson & Johnson Janssen, said in a statement: “We have determined that a single injection of our COVID-19 vaccine will produce a strong and powerful immune response that can last for eight months.”
“With these new data, we also see enhanced doses Johnson & Johnson COVID-19 vaccine Further increase the antibody response of study participants who have previously received our vaccine. “
An increase in antibodies was observed in study respondents who were 18 to 55 years old and 65 and older who received lower dose injections.
Johnson & Johnson submitted its findings to medRxiv magazine on Tuesday. The company said it is currently cooperating with the U.S. Food and Drug Administration, the Centers for Disease Control and Prevention, and the European Medicines Agency on enhanced dosage.
According to the US Centers for Disease Control and Prevention (CDC), Johnson & Johnson’s single-dose COVID vaccine was approved for emergency use at the end of February and has been vaccinated in approximately 14 million Americans. CNN.
Johnson & Johnson’s news is in Pfizer’s new coronavirus vaccine Obtained FDA approval on Monday and just a few days later under FDA’s push Biden Administration Let all Americans start receiving booster injections on September 20-eight months after their second dose of Pfizer or Moderna vaccine.
Johnson & Johnson’s (J&J) vaccine news was also released as the US Centers for Disease Control and Prevention (CDC) released a new study on Tuesday, indicating that the effectiveness of the COVID vaccine may increase Delta variant According to reports, it accounts for the majority of U.S. virus cases The agency’s data, According to reports USA Today.
research shows, Vaccine efficacy The CDC says that as the Delta variant spreads, the number of fully vaccinated health care workers decreases. This may be the result of reduced immunity of the vaccine over time, the higher infectivity of the Delta strain, or other factors.
CDC added, “This trend should be interpreted with caution because VE [vaccine effectiveness] It may also decrease as the time of vaccination increases, and because the number of observation weeks is limited and the participants rarely get infected, the estimation accuracy is poor. “
As of 9:43 on Wednesday morning, Johnson & Johnson’s stock price was $174.51, down 88 cents or 0.50%.
Photo: AFP/Justin Tallis
