0036-3634 0036-3634 S0036-36342020000400372 10.21149/10164 Mexico Mexico Mexico Mexico 00 08 2020 00 08 2020 62 4 372 378

2010 85 2 2 328-45 2014 44 7 7 302-7 1986 2 4 4 437-55 2008 75-122 1988 1 1-39 2004 97 1 1 130-9 1993 30 5 5 922-7 1994 10 3 3 447-50 2003 9 5 5 606-7 2013 38 2 2 277-88 1973 10 2 2 219-23 1994 31 4 4 618-22 2007 32 1 1 34-40 1995 118 6 6 473-7 Centers for Disease Control and Prevention 1980 2000 1954 48 1 1 58-74 1911 2 73-8 1991 7 3 3 456-61 2015 36 456-61 2006 22 648-53 2015 10 8 8 1956 50 4 4 399-414 1971 31 3 3 356-9 1987 96 275-80 1990 36 3 3 165-72 2017 46 6 6 622-30 1986 1994 31 4 4 611-7 2013 8 3 3 2011 4 105 1994 10 2 2 326-32 2004 50 7 7 677-85 2006 209 645-55 2012 28 3 3 114-21 1995 32 4 4 471-4