Johnson & Johnson says its 1-shot COVID vaccine effective in trials - CBS News

1. Johnson & Johnson says its 1-shot COVID vaccine effective in trials  CBS News
2. Johnson & Johnson's Covid-19 vaccine, how it works and why it matters  CNN
3. Johnson & Johnson Says Single Dose Vaccine Is Effective In Preventing Covid Symptoms | MSNBC  MSNBC
4. Johnson & Johnson's Covid-19 Vaccine Is Good, Despite Lower Efficacy  Bloomberg
5. Johnson & Johnson’s Vaccine Offers Strong Protection but Fuels Concern About Variants  The New York Times
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