Single-shot nature of Johnson and Johnson vaccine
The most enticing aspect of the Johnson and Johnson vaccine was, of course, its single-shot nature. While most other COVID-19 vaccines required two doses, this particular vaccine offered maximum protection with only a single dose. Additionally, it didn’t require refrigeration as other COVID-19 vaccines did. In theory, this would allow more people to receive the vaccine and allow for more efficient distribution. In February, United states officials approved the COVID-19 vaccine. Officials of USA approved the vaccine after many trials. After the test and trials, it’s visible that side-effects are not too much.