New England Journal of Medicine
June 6, 2019 Vol. 380 No. 23
http://www.nejm.org/toc/nejm/medical-journal

Perspective
Measles in 2019 — Going Backward
Catharine I. Paules, M.D., Hilary D. Marston, M.D., M.P.H., and Anthony S. Fauci, M.D.