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Moderna Plans Booster Doses To Help Fight Virus

With “the rising force of infection” from Delta variant and eventual waning immunity, a “booster will likely be necessary to keep us as safe as possible” this winter, Moderna President Dr Stephen Hoge told investors.

Moderna Plans Booster Doses To Help Fight Virus
Representational Image | AP
Moderna Plans Booster Doses To Help Fight Virus
outlookindia.com
2021-08-05T21:15:44+05:30

Moderna officials say while its COVID-19 vaccine's protection is holding up, it's planning for booster doses to help fight the highly contagious delta variant.

With “the rising force of infection” from that variant and eventual waning immunity, a “booster will likely be necessary to keep us as safe as possible” this winter, Moderna President Dr Stephen Hoge told investors.

The shots remain 93% effective four-to-six months after the second dose, according to the latest tracking of Moderna's 30,000-person vaccine study, the company reported Thursday. But that came before the recent surge in delta-caused COVID-19 cases.

Real-world evidence from multiple countries shows protection, especially against hospitalisations and deaths, remains strong against the delta variant.

Hoge says a half-dose of the original vaccine given six-to-eight months after people's second shot may provide a sufficient boost. He cited a small study showing that triggered increases in antibody levels high enough to fight variants, including delta.

Moderna and competitor Pfizer are studying a variety of booster strategies. While some countries already have begun offering a third dose to vulnerable groups with weak immune systems, US health authorities haven't called for boosters.

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