Health officials in the United States are cautioning the public over a new COVID-19 mutation, the XBB.1.5 omicron subvariant, which has quickly grown to account for 40 percent of all U.S. cases. White House COVID-19 response coordinator Ashish Jha has stated that it is not yet known if this version is more dangerous than previous mutations. FDA Commissioner Robert Califf has also said that there is no clear evidence that repeated vaccination with COVID-19 vaccines makes people more susceptible to the XBB.1 or XBB.1.5 variants.
The World Health Organization's Maria Van Kerkhove has referred to the XBB.1.5 as the "most transmissible subvariant that has been detected yet." This is due to the mutations within the strain which allow it to easily adhere to cells and replicate. Nevertheless, Jha has said that antiviral treatments such as Paxlovid and Molnupiravir should still be effective.
At this time, it is important to continue to take the necessary precautions to reduce the risk of infection. This includes social distancing, wearing a mask, and washing hands regularly. Health officials are continuing to analyze the data and it is important to remain vigilant and informed.