Measles Outbreak in the Pacific situation reports provide a summary of new and all reported measles cases, case management, declared outbreaks, morbidity and mortality, and measles vaccines distribution - in Pacific Island countries and territories generally as well as at the country or territory level - plus next steps in response plans. Relevant regional emergency events that affect measles surveillance activities are also provided. The reporting period for report #11 is January 5-19, 2020, with data covering October 2019 - January 2020.