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The effectiveness of the COVID-19 vaccine against infection appears to have declined, a CDC scientist said.
dr. Sara Oliver said vaccines are still very effective in preventing hospitalization.
“Vaccines remain effective in preventing hospitalization and serious illness,” Oliver said.
COVID-19 vaccines are still highly effective against hospitalization despite the rise in the more transmissible Delta variant, a Centers for Disease Control scientist said Monday.
In a presentation to the CDC’s Advisory Committee on Immunization Practices on Monday, dr. Sara Oliver said that since Delta appeared, the vaccine’s effectiveness against hospitalization has ranged from 75% to 95%.
The vaccine’s ability to prevent infection has ranged from 39% to 84% since the introduction of the Delta variant.
“Vaccines remain effective in preventing hospitalization and severe illness, but may be less effective in preventing infection or milder symptomatic illness,” the presentation said.
The slides said that both the diminishing protection over time and the Delta variant may contribute to the lower effectiveness of the vaccines.
Oliver said it’s not uncommon for some vaccines to require multiple doses, including vaccines for hepatitis and HPV. However, she said more information is needed before the group can assess the need for booster shots.
dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, previously said the pandemic could: be under control by next spring when the millions of people who have not yet been vaccinated receive their injections. The presentation said the top priority should be to vaccinate those Americans.
Experts have warned that the spread of the virus, especially the Delta variant, could lead to a more dangerous variant.
“This is a very cunning virus,” Fauci said. “If we linger without vaccinating those people who need to be vaccinated, this could linger, leading to the development of another variant, which could complicate things.”
Those most at risk for serious illness should be prioritized for booster shots, the presentation added.
Oliver also said it is important to ensure that vaccine is available worldwide. “Uncontrolled global spread that could result in new variants threatens control of the pandemic everywhere,” her presentation said.
Read the original article Business Insider
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