[UN] In its weekly epidemiological update, published on Tuesday, WHO warned it was becoming increasingly prevalent in Colombia and Ecuador, and showed signs of possible resistance to vaccines.Mu was first identified in Colombia in January 2021, and since then, there have been "sporadic reports" of cases and outbreaks in South America and Europe, WHO said.
While the global prevalence of Mu among sequenced COVID-19 cases is below 0.1%, its prevalence has "consistently increased" in Colombia and Ecuador, where it is now responsible for around 39% and 13% of infections, respectively.
Reports on the variant’s prevalence should be "interpreted with due consideration" given the low sequencing capacity of most countries, the agency said.