A C ovid-19 strain that has been dubbed the "nightmare variant" by the media is rapidly doubling the number of infections in countries where it has been detected.
The strain, known as XBB, has been found in more than 17 countries in Asia and Europe.
It has been dubbed a "nightmare" by media in Asia because of how fast it spreads and how it appears to evade protection to those who are vaccinated or have natural immunity.
