Text and Data Mining valid from 2019-09-03
Received: 15 January 2019
Accepted: 25 August 2019
First Online: 3 September 2019
Ethics approval and consent to participate
: Because the investigation was part of a public health response in China, such outbreak investigations are considered by China CDC’s Ethical Review Committee to be exempt from Institutional Review Board (IRB) review. Verbal consent was obtained from all measles cases approved by the IRB of China CDC.
: Not applicable.
: The authors declare that they have no competing interests.