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Table 3 Number of EV71 genotypes for every year in mainland China

From: Molecular characteristics of the VP1 region of enterovirus 71 strains in China

Year Gene subtype of EV71 Number
C4a C4b C1 C2 C3 C5 A B1 B2 B3 B4 B5
1986              0
1996     1          1
1997      1         1
1998   1   1          2
1999              0
2000   3            3
2001   4            4
2002   4            4
2003 7 7        1     15
2004 1 13   1          15
2005 3   1           4
2006 6 1 1           8
2007 56 2            58
2008 280 6   2 1   4       293
2009 341 16      2       359
2010 551 15            566
2011 302 6 1 3 1   1 2 2 3   2 323
2012 273 27      1       301
2013 231 1   1          233
2014 415 22   4          441
2015 159 12   1          172
2016 148 15           1 164
2017 148             148
2018 11             11