Correction to: VirusDis. https://doi.org/10.1007/s13337-017-0414-4

In the original publication, there is an error in the article title. It should be corrected as ‘Efficacy of H120 and Ma5 avian infectious bronchitis vaccines in early challenge against QX strain’. Also, ‘OX strain’ should be changed to ‘QX strain’ throughout the article.