The 2019 Samoa measles outbreak began in September 2019.[5] As of 6 January 2020, there were over 5,700 cases of measles and 83 deaths, out of a Samoan population of 200,874.[4][6] Over three percent of the population were infected.[7] The cause of the outbreak was attributed to decreased vaccination rates, from 74% in 2017 to 31–34% in 2018, even though nearby islands had rates near 99%.

https://en.wikipedia.org/wiki/2019_Samoa_measles_outbreak#cite_note-now_83-4