Scientists are monitoring a coronavirus mutation that could affect the strength of vaccines
As scientists try to track the spread of a new, more infectious coronavirus variant around the world — finding more cases in the United States and elsewhere this week — they are also keeping an eye on a different mutation with potentially greater implications for how well Covid-19 vaccines work.
The mutation, identified in a variant first seen in South Africa and separately seen in another variant in Brazil, changes a part of the virus that your immune system’s antibodies get trained to recognize after you’ve been infected or vaccinated. Lab studies show that the change could make people’s antibodies less effective at neutralizing the virus. The mutation seems to help the virus disguise part of its signature appearance, so the pathogen might have an easier time slipping past immune protection.
