Johnson & Johnson Begins Study of One-Dose Covid Shot

The video discusses a new vaccine entering large trials in the US, highlighting its potential as a single-dose solution, which could expedite distribution during the pandemic. It compares this vaccine with Pfizer's, noting differences in dosage and storage requirements. The video also addresses the ambitious timelines for vaccine approval and the importance of ensuring efficacy against severe COVID-19 cases.

What concerns are raised about the efficacy data of the vaccines?

What steps are being taken to ensure the vaccine trials are thorough?