Renowned scientists have said that, as
the new coronavirus spreads, there is a higher chance of Nigeria having
another strain of the viral infection.
A professor of virology and former
Vice-Chancellor at the Redeemer’s University, Nigeria, Ede, Osun State,
Oyewale Tomori, told PUNCH HealthWise that the more there is community
spread of the infection, the higher the chance of virus mutation to form
a new strain that is peculiar to Nigeria.
Prof. Tomori said, “The more the community spread, the higher the chance of virus mutation.”
Confirming that there are three strains
of COVID-19 in Nigeria, Tomori said the strains, which are classified
into A, B.1 and B2-1, represent importations from different parts of the
world.
According to the virologist, studies
principally conducted at the African Centre of Excellence for the
Genomics of Infectious Disease at RUN, together with the Nigeria Centre
for Disease Control revealed that the first SARS-CoV-2 causing the
COVID-19 disease isolated from the European traveller who introduced the
disease to Nigeria is genetically related to the European virus,
consistent with the known travel history of this case.
“Further studies from the same ACEGID at
the Redeemer’s University, showed that genetic analyses of twenty
additional SARS-CoV-2 isolated in Nigeria belong to three different
lineages -A, B.1 and B.2-1.
“The A-line includes viruses originating
from China and exported to other regions of the world – South East
Asia, Japan, South Korea, Australia, the USA.
“The B.1 lineage corresponds to the
Italian outbreak, while the B.2-1 line represents viruses from the UK,
Europe, Jordan, Australia, USA, India, Ghana.
“These studies conclude that there have been various introductions of multiple lineages of COVID-19 virus into Nigeria.”
Tomori said that the Ede team found that four of Nigerian cases were patients infected with a mutant virus.
“Three of these patients presented with
very severe disease. This mutation helps the virus to dominate the wild
type and to evade immune interventions.”
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