The World Health Organization said the symptoms of the new strain of COVID-19 are similar to the flu”: The new version of the PJ.2.1 coronavirus is difficult to distinguish from seasonal respiratory infections.
"The signs of infection with the new version of the PJ.2.1 corona virus are the same as those of a cold or flu. The organization noted that based on signs alone, it is not possible to determine with certainty which respiratory virus caused the infection. An examination may be required if determining the cause of the disease may affect treatment decisions or public health."