The WHO system is intended to simplify genomics for the public. If it thinks they might be of particular value, it names related covid samples. The WHO currently recognizes eight families that have Greek letters. However, until evidence is presented to show that a new sublineage has emerged from the first delta strain, they are all considered delta.
Delta plus uses the WHO designation to mix it with Pangos lineage information. This does not mean that the virus is any more dangerous or more alarming.
When a Pango name is revealed, people get anxious. We shouldn't be worried about the discovery of new Pango variants. Brito says that we are seeing new variants with the same behavior all the time. WHO will change the name of a new lineage if it is proven to be more dangerous.
Kelsey Florek is a senior genomics and data scientist at the Wisconsin state public hospital. She wants to know which variations she saw. It doesn't make any difference to the general public. It is enough to classify them all as delta for communication with policy makers, public healthcare, and the general public.
Fundamentally, viral mutation works in the same way as any other type of evolution. The virus spreads throughout the body and makes copies, often with small errors or changes. While most of these copies are not effective, it can sometimes replicate enough within a person's body to spread the virus to others.
Scientists have divided the "children" of delta into 12 families this week in an effort to track small-scale, local changes. This does not mean that the virus has suddenly changed.
These small changes are what allow scientists to track the transmission patterns. Scientists can also look at human genomes to identify family members. However, the majority of these genetic changes do not have any effect on how it affects people and communities.
However, genomic scientists still require a method to track viral evolution for both basic science and to detect any behavioral changes as soon as possible. They are therefore keeping an eye on the rapid spread of delta virus. The Pango team continues to divide descendants of the original delta lineage, B.1.617.2, in subcategories of related cases.
It had registered 617.2 plus three children (AY.1,AY.2, and, sadly, AY.3) until recently. The team split the children into 12 families this week to track local small-scale changes. This does not mean that the virus has suddenly changed.
Duncan MacCannell is chief scientific officer of CDC's Office of Advanced Molecular Detection. The hairs may split differently depending on how they are defined and refined.
What is important to the public?
Not all WHO variants are equal. The organization also gives a new family a nickname. This label tells us how concerned we should be.
The lowest level is called a variant or interest. It is worth paying attention to. In the middle, there is a variant or concern like delta which clearly has evolved to be more hazardous. Variants of interest are often given this label because they share a mutation that is being monitored.