Viral vector vaccines use a harmless virus to deliver a piece of genetic code to human cells. (Representative photo) These vaccines generally consists of a live attenuated virus that is genetically ...
More than 5 million people worldwide have had their lives cut short by COVID-19, and the number keeps rising. The best defense against this virus is a vaccine. VOA's Carol Pearson explains one ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback