A newer COVID-19 variant, known as NB.1.8.1, has been nicknamed by some as "razor blade throat" due to the painful symptom. Data from the open global genome sequencing database GISAID shows the new variant has been detected in several states, including New York, Illinois, Texas and California. Public health experts told ABC News there is no cause for serious concern yet because the virus does not appear to be more severe than previous variants and there are steps that can be taken to protect yourself. Read more: https://abcnews.visitlink.me/n2wJH6