COVID Variants May Emerge That Are Not Covered By Vaccine, Scientists Warn | Voice of America

In a rare yet expected development, a small number of people have developed COVID-19 after they have been vaccinated.

"Nothing is 100% in this world," said Gigi Gronvall, a senior scholar at the Johns Hopkins Center for Health Security.

As new variants emerge around the world, however, scientists say it is critical to look out for these rare cases. They could be signs of something more serious.

"It's possible that more variants might emerge that are not covered by the vaccine," Gronvall said. "That's why it's important that these breakthrough cases are investigated."...VOA