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Biotech company Moderna says it expects people to need to receive a third dose of its COVID-19 vaccine before this winter, as the delta variant will likely lead to more breakthrough infections.
The vaccine maker announced Thursday that its COVID-19 vaccine remains 93% effective against symptomatic illnesses six months after the second dose, and the company plans to complete its request for full approval from the Food and Drug Administration (FDA) this month.
But while the vaccine maintained a high level of protection for six months, Moderna said the spread of the highly contagious delta variant combined with waning immunity over time means boosters would be needed to protect people from disease. serious.
“We believe that the increase in the force of infection resulting from Delta, fatigue from non-pharmaceutical interventions (NPI) and seasonal effects (moving indoors) will lead to an increase in infections in those vaccinated”, Moderna said. in a published presentation to its website.
“As we see continued efficacy of phase 3 over 6 months, we expect neutralizing titers to continue to decline and eventually impact the efficacy of the vaccine. Given this intersection, we believe that a 3 dose booster will likely be needed before the winter season, ”Moderna said.
White House chief medical adviser Anthony Fauci said Thursday that the Biden administration was preparing to get booster shots for people with compromised immune systems “as quickly as possible.”
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“It is extremely important for us to act to ensure that these people receive their boosters, and we are currently working on it and we will make sure that this is implemented as quickly as possible, because for us and for the people involved it is is a very high priority, ”he added. Fauci said.
Israel, France and Germany are moving forward with plans to offer boosters to immunocompromised people and the elderly, defying World Health Organization (WHO) call to wait until September so that the poorest countries can immunize more of their populations.
White House press secretary Jen Psaki on Wednesday called WHO’s request for a moratorium on booster injections a “bogus choice” because the United States could administer booster shots while continuing to donate to the global vaccine supply.
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