1870-199X 1870-199X S1870-199X2019000400224 Mexico Mexico Mexico 00 12 2019 00 12 2019 23 4 224 232

1. 2015 90 179-85 2. 2008 58 187-93 3. Centers for Disease Control and Prevention 2016 4. 2014 78 2 2 187-94 5. 2017 6. 2013 41 ^s5 ^s5 5 S20-5 7. 2013 41 ^s5 ^s5 5 S56-9 8. 2014 42 1 1 e1-5 9. 1994 3 10. 2000 64 5 5 352-6 11. 2003 52 RR-17 RR-17 1-61