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Booster doses of Johnson & Johnson's one-shot coronavirus vaccine generated a big spike in antibodies

Johnson & Johnson booster shot prompts large increase in immune response, company says

By Maggie Fox, CNN Booster doses of Johnson & Johnson’s one-shot coronavirus vaccine generated a big spike in antibodies, the frontline immune system defenses against infection, the company reported Wednesday. People who received a booster six to eight months after their initial J&J shots saw antibodies increase nine-fold higher than 28 days after the first

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The US could enter spring of 2022 with Covid-19 under control if enough people get vaccinated

Vaccines are less protective against Delta infection but still reduce risk by two-thirds, CDC study shows

By Michael Nedelman, Eric Levenson and Madeline Holcombe, CNN Vaccine effectiveness against Covid-19 infection dropped from 91% to 66% once the Delta variant accounted for the majority of circulating virus, according to a study published Tuesday by the US Centers for Disease Control and Prevention. “While we did see a reduction in the protection of

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