article_snippet.sent: At least 92 percent of the population of America is vaccinated.
article_snippet.sent: However, the number of children who are not vaccinated, is higher in some states, particularly in California where a number of cases are believed to have originated.
article_snippet.sent: In California an estimated eight per cent of kindergartners fail to get the required immunizations against measles, mumps and rubella.
article_snippet.sent: Some people choose not to get Some people children vaccinated for personal reasons, or it may be because Some people immune system is compromised.
article_snippet.sent: Children under one year old are not vaccinated because Children under one year old bodies cannot cope with the vaccine.