Thi Nga, N., Thu, H.T., Hoa, N.T., Hien , V.T., Thu Trang, N., Thanh Ba, N., Van Khanh, T., Huu Vu, N., Van Quyen, D., Long Thanh, T. and Duy Khang, D. 2022. Assessment of the genetic changes of the attenuated Hanvet1.vn strain compared with original virulent 02HY strain of the porcine reproductive and respiratory syndrome virus. Vietnam Journal of Biotechnology. 20, 2 (Jun. 2022), 245–252. DOI:https://doi.org/10.15625/1811-4989/16677.