Latest update September 21st, 2026 2:51 PM
Sep 02, 2021 News
– said to be “variant of interest”
Kaieteur News – The World Health Organization has said it is monitoring a new coronavirus variant known as “Mu”, which was first identified in Colombia in January 2021. Mu, known scientifically as B.1.621, has been classified as a “variant of interest”, the global health body said Tuesday in its weekly pandemic bulletin. The WHO said the variant has mutations that indicate a risk of resistance to vaccines and stressed that further studies were needed to better understand it.
“The Mu variant has a constellation of mutations that indicate potential properties of immune escape,” the bulletin said.
There is widespread concern over the emergence of new virus mutations as infection rates are ticking up globally again, with the highly transmissible Delta variant taking hold – especially among the unvaccinated – and in regions where anti-virus measures have been relaxed.
All viruses, including SARS-CoV-2 that causes Covid-19, mutate over time and most mutations have little or no effect on the properties of the virus.
But certain mutations can impact the properties of a virus and influence how easily it spreads, the severity of the disease it causes, and its resistance to vaccines, drugs and other countermeasures.
The WHO currently identifies four Covid-19 variants of concern, including Alpha, which is present in 193 countries, and Delta, present in 170 countries.
Five variants, including Mu, are to be monitored.
After being detected in Colombia, Mu has since been reported in other South American countries and in Europe.
The WHO said its global prevalence has declined to below 0.1 percent among sequenced cases. In Colombia, however, it is at 39 percent. (AFP)
Subscribe to get the latest posts sent to your email.

Sep 21, 2026
IMC Over-40s Cricket World Cup Guyana 2026 (Kaieteur Sports) The Cricket West Indies Masters Association (CWIMA) welcomes The New Doctor’s Clinic as a Bronze Sponsor of the IMC Over-40s Cricket...Sep 21, 2026
(Kaieteur News) There are governments that take a year to get started, governments that take a year to find their feet, and then there is the second Irfaan Ali administration, which seems to have been in office for approximately three years, seven months and a long weekend, even though it has been...Sep 20, 2026
By Sir Ronald Sanders (Kaieteur News) – Crime in Latin America and the Caribbean is no longer only a matter for the police. It is weakening societies, draining economies and obstructing development. It is also testing public confidence in courts, governments and democratic institutions. The...Sep 21, 2026
Kaieteur News – For now, all I have is a handful of questions. I think they have bearing, particularly when the temperature of the local environment is taken. Where did this “visa review” development originate from: official Guyana or the U.S? It has to be one of the two places,...Freedom of speech is our core value at Kaieteur News. If the letter/e-mail you sent was not published, and you believe that its contents were not libellous, let us know, please contact us by phone or email.
Feel free to send us your comments and/or criticisms.
Contact: 624-6456; 225-8452; 225-8458; 225-8463; 225-8465; 225-8473 or 225-8491.
Or by Email: glennlall2000@gmail.com / kaieteurnews@yahoo.com