We may soon have a third vaccine. Here’s what you need to know about the Johnson & Johnson shot
The results of a late-stage clinical trial for a new COVID-19 vaccine from Johnson & Johnson were hailed as good news, even though the company reported that its one-shot vaccine had a lower efficacy rate than its two-shot rivals — Moderna and Pfizer-BioNTech — which are already being administered to people across the US.
We asked and answered key questions about the new vaccine and how it compares to the others.
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