But JN.1 has more than 30 additional mutations on its spike protein compared to XBB.1.5. Most people in the U.S. haven’t gotten an updated Covid shot — just around 8% of children and nearly 19 ...

Initial experiments using the blood of rodents infected or vaccinated against BA.2.86 showed that those rodents demonstrated an effective neutralization of both BA.2.86 and JN.1, which is called a ...