Pfizer and Moderna Provide 80% Prevention Effectiveness with Just One Dose

[Image source=Reuters Yonhap News]

[Asia Economy Reporter Cho Hyun-ui] It has been found that receiving just one dose of Pfizer or Moderna's COVID-19 vaccine provides an 80% prevention effectiveness.

The U.S. Centers for Disease Control and Prevention (CDC) announced on the 29th (local time) the results of a study conducted on 3,950 healthcare workers from December 14 last year to the 13th of this month.

According to the CDC's observation of the vaccine's effectiveness, prevention effectiveness reached 80% two weeks after the first dose. After completing the second dose, the prevention effectiveness exceeded 90%.

The CDC stated, "mRNA COVID-19 vaccines such as Pfizer and Moderna show effectiveness in real-world settings regardless of severity," and "we recommend that everyone eligible for vaccination receive it."

While Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases (NIAID), emphasizes the importance of the second dose, this study raises the prospect of a conflict with the argument that more people should receive the first dose with the supply intended for completing the second dose.

Paul Offit, a member of the Vaccine and Related Biological Products Advisory Committee (VRBPAC), an advisory body to the U.S. Food and Drug Administration (FDA), told CNBC, "I worry that people might think one dose is enough," and explained, "Pfizer and Moderna vaccines require the second dose for long-lasting vaccine effectiveness."

Meanwhile, this study was conducted in eight regions across the United States. Most participants were white women without chronic underlying diseases.

This content was produced with the assistance of AI translation services.