Airborne transmission of COVID-19 possible – PTF
The Presidential Task Force (PTF) on Monday revealed that
airborne transmission of COVID-19 is possible, even as new evidence has shown.
Speaking during the Presidential Task Force on COVID-19
briefing in Abuja, the Director-General of the Nigeria Centre for Disease Control
(NCDC), Dr. Chikwe Ihekweazu, said: “Over the past few weeks, increasing
evidence has emerged that in addition to droplet infection we cannot rule out
that airborne transmission is also possible as a mode of transmission of
covid-19.
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“The World Health Organization (WHO) has updated its
guidelines on this saying exactly the same thing – that we cannot rule out airborne
transmission. Therefore, we have to act in a precautionary way assuming that
this is also possible given the new evidence that is emerging.
“Understanding the mode of transmission of any new virus is
very critical for defining response strategies. For Covid-19, from the very
beginning, our understanding based on all the coronavirus that was spread, was
primarily through droplets and excretions from the respiratory tract that can’t
stay on in air, and they ultimately fall to the ground after a few minutes.
“However, as we have studied transmissions and clusters of
these infections, we saw increasing evidence from clusters of infections where
droplet transmission did not seem to be enough to explain the clusters that we
are seeing.
“Diseases that are commonly understood to be spread by what
we call airborne infection are things like measles, influenza, etc., that can
be suspended in the air and transmitted over longer distances.
“The new research does not change our guidelines, but only
strengthens them as they stand.”
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