UW researchers to study COVID-19 vaccines' long-term effectiveness KING 04.08 04:22 http://rssfeeds.king5.com/~/648655490/0/king5/local~UW-researchers-to-… + 0 http://rssfeeds.king5.com/king5/local + 0 The study is looking for unvaccinated participants as well, but space is extremely limited.