Congenital cytomegalovirus (cCMV) infection causes (often lifelong) health problems for one in every 1,000 newborns in the USA. Hadassah / Hebrew Uni researchers have developed an efficient cCMV PCR saliva-based screening test for early detection & treatment.
https://www.jpost.com/health-and-wellness/article-791556
https://www.hadassah.org/story/newborn-saliva-screen-could-revolutionize-ccmv-protocol