Brazil's Serrana aims for COVID herd immunity first
Published
A Brazilian city of 45,000 has launched a major coronavirus vaccination drive. Health experts hope herd immunity could be achieved by May.
Full ArticlePublished
A Brazilian city of 45,000 has launched a major coronavirus vaccination drive. Health experts hope herd immunity could be achieved by May.
Full ArticleWatch VideoIt’s really a matter of simple math, but thanks to a slow vaccination pace and a growing number of variants, herd..