Since the
emergence of the new coronavirus, called SARS-CoV-2, several researchers have
proposed that there is more than one strain, and that mutations have led to
changes in how infectious and deadly it is. However, opinions are divided.
All data and statistics are based on publicly available data
at the time of publication. Some information may be out of date. Visit
our coronavirus hub and follow our live updates page for
the most recent information on the COVID-19 outbreak.
Genetic mutations are a natural,
everyday phenomenon. They can occur every time genetic material is copied.
When a virus replicates inside the
cell it has infected, the myriad of new copies will have small differences. Why
is this important?
When mutations lead to changes in
how a virus behaves, it can have significant consequences. These do not
necessarily have to be detrimental to the host, but in the case of vaccines or
drugs that target specified viral proteins, mutations may weaken these
interactions.
Since the emergence of SARS-CoV-2,
several research studies have highlighted variations in the virus’s genetic
sequence. This has prompted discussion about whether or not there are several
strains, if this has an impact on how easily the virus can infect a host, and
whether or not this affects how many more people are likely to die.
Many scientists have called for caution.
In this Special Feature, we summarize what researchers currently know about
SARS-CoV-2 mutations and hear from experts about their views on what these mean
for the pandemic.
Source: Medical News Today
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