Virus Evolution, 2015, 1(1): vev008 doi: 10.1093/ve/vev008
The authors wish to make the following correction to their article:
In Section 2.6, the sentence ‘Mutations were introduced using a pair of adjacent divergent primers, one of which carried the desired change.’ should be corrected to ‘Mutations were introduced using a pair of self-complementary primers carrying the desired change.’ The primers that we use in this work to make the single mutants were self-complementary primers, not adjacent divergent primers. The results and conclusion of the article are not affected and remain valid. The authors apologize to the readers for the inconvenience caused.