Patient: I am hepatitis B infected and my breast milk has tested positive or negative for DNA, can I breastfeed? Hu Airong, Department of Western Medicine and Hepatology, Ningbo Infectious Disease Hospital: China’s Guidelines for the Prevention and Treatment of Chronic Hepatitis B are very clear: as long as the child is born with timely and correct blocking measures, breastfeeding is allowed. As for the detection of DNA in breast milk, I have mentioned this issue on several occasions. Even if hepatitis B virus DNA is detected in breast milk, it does not mean that hepatitis B virus can be transmitted through breast milk, because hepatitis B virus is transmitted through virus particles, which are currently detected only in blood. Foreign experts do not agree with the view that “if DNA is detected in breast milk, it means that hepatitis B virus can be transmitted to children through breast milk”, but their view is very clear: if hepatitis B virus particles are not detected in breast milk, the above conclusion cannot be drawn. It seems that the scientific research abroad is still more rigorous.