Virus variants found to be deadlier, more contagious; some may thwart vaccines /

Lapid, Nancy

Virus variants found to be deadlier, more contagious; some may thwart vaccines / by Nancy Lapid

https://news.abs-cbn.com/overseas/03/18/21/virus-variants-found-to-be-deadlier-more-contagious-some-may-thwart-vaccines

Virus variants thwart vaccines deadlier