New England Journal of Medicine
March 12, 2020 Vol. 382 No. 11
http://www.nejm.org/toc/nejm/medical-journal

Original Articles
Consequences of Undervaccination — Measles Outbreak, New York City, 2018–2019
Jane R. Zucker, M.D. et al.
Importation of measles and vaccination delays among young children led to an outbreak of measles in New York City. The outbreak response was resource intensive and caused serious illness, particularly among unvaccinated children.