The U.S. Centers for Disease Control said the patient’s sample showed mutations in the hemagglutinin gene, the part of the virus that plays a key role in it attaching to host cells; however, it said the risk to the general public remains low The U.S. Centers for Disease Control said the patient’s sample showed mutations in the hemagglutinin gene, the part of the virus that plays a key role in it attaching to host cells; however, it said the risk to the general public remains low Health Health News, Wellbeing Tips, Diseases, Treatment and Nutrition | The Hindu