On December 31 Tony in nineteen. Seafood market
and Wuhan China which shut down after officials
reported that it was connected to an outbreak of viral
pneumonia in the city. Now over a year into the
Covert nineteen and I battle is still known about where
the virus came. Have to have a really good situational
awareness to the put out the embers before you end
up with a wildfire. The World Health Organization took
a group of seventeen international experts to Wuhan.
To work with the Chinese collaborators on an in depth
search for cope with nineteen origins members of the
group are now sharing details on their findings. At that
gathering. We'll lose disparate bits of information. Had
their investigation change what we know about the
virus. How long can eat for yet definitive answers on
how outbreaks are. Chris
I understand where this iris came. So that we can't
understand how it is not future outbreaks going to
oratory. Not about being your wreaking it's just about
understanding. It so that we know how to do better in
the future. Since the first discovery of a mystery virus
annually between nineteen. Researchers have been
trying to pin down exactly work have in nineteen came
from. Their search begins with the seafood market in
Wuhan China with the shutdown on December 31 after
doctors can I get as a link between number of mystery
cases of pneumonia and city. As researchers try to
juggle contact tracing environmental testing and the
challenges of an outbreak. The virus speaking to
spread across the globe. On January 13 the first
known case of coveted eighteen was reported outside
China. Two more countries report their first series in
the next few days and more would follow. Many initial
cases where people who recently traveled from China
this outbreak grew local transmission became more
common. I marks 100 countries and territories
reported at least one case of corporate 200 countries
and territories reported at least one case April. By
early tween tween run. Or 100 million cases were
reported across more than 200 in twenty countries
and territories. The look back on exactly what have
been in China ballot and not very clear. Huge
show. I hear people in pairs figure out what she's on
rock. The teel time to do an outbreak investigation. Is
wrong that Tanya right stuff but I think we've got to
remember that. This wasn't incredibly difficult period
for the victim who hung didn't mean tens of
thousands of kinds. Earlier academic researchers say
that they determined that the virus likely hats in the
attic margins immediately to jump from animals to
people. Not a disease outbreak is happy to wait you
have humans in contact with an animal. It's an infected.
With the virus could be. Canceling an. Eating
meat and could be carrying that animal for our market
and do not outbreaks happen anywhere. That are
more in depth investigation would be needed to
understand how the virus made its way into the human
population. Investigations like this can take years to
complete. Her best analogy that is. Almost. 2003.
SARS lines. Stars align merged at best as
weak and help old. Running back team in China then
went to an intermediary animal and man T he'll. Took
several years an investigation. After that r. s one
out great eating get to that. A year after the first cases
were reported. The Debbi HL appointee to keep a
virologist. Epidemiologist. And the largest to investigate
the origin of the pirates will hunt. A report detailing
their findings offer some leads about where a virus
may have come from but it's also been plagued with
Khartoum. RC there have been allegations. That
Chinese authorities were not tired weak or funny how
certain rocky it was Al. Or the last war the
best and most thorough investigation. And a and
here's in the early months. And
where we can go. The team visited several locations in
Wuhan that could offer clues about the origin of cup in
nineteen. One of the locations with Quan on seafood
market. Market and move on which was associated
with the first known cluster of cases. What markets like
this all meat fruits and vegetables and artists such a
low class resource for their surrounding communities.
Some markets also installs itself armed wild camels.
Early environmental testing in the market countries is
the virus on some surfaces. Investigators determined
three likely Pakistani merchants for how the virus could
make its way into the market and other market place.
That three Erie that they had narrowed this down tube.
All have to do way back ask our calls
are. Even. Researchers feel
pretty confident about that because of what they know
about the way east corona viruses circulate in
populations and because of prior experience with
corona virus coming from. Theory number Warren.
Add it to an intermediary. Which then gives it to her
purse although they don't know for sure what Erie
animal it. Theory number two that either directly
to her. This could happen because I'm out there
hunting logging market in each here with that area.
The third possibility is that it started fast but then
somehow got into an animal that rose in for food. And
then transported longer distance. And that means that
the act Meehan or that intermediary reservoir. Could
potentially he farther away. The World Health
Organization says that researchers in China have
tested 50000 samples from 300 different species but
none have been positive for XR Scobey to. Tested
while. Life that was coming from while croissants and in
the market and it looks like those animals some of
those animals work of the time that should carry
corona virus is not a smoking jungle it's a clue. This
morning and something that was don't we don't act the
outbreak in the war room in the nose wheels that is
where we operate and those who send. Despite early
this cluster of cases having an association with the
market a large portion of cases appeared to have no
connection at all. In order to better understand where
else the virus was circulating. Another location they
visited it was who they provincial hospital and integrate
cheneys and western medicine for some of the first
case of Covert were treated. Here and several other
hospitals it is it in the area they look to early
sequencing data from the virus. Our state dancing
Israeli type the genetic material in the Abbas and
determinant structure it's like contact tracing that using
molecular biology. Like most fire says SARS closely to
mutates over time. And it's genetic makeup can
change as it's passed between people. If two people
have a strain of the virus to have the scene sequence
image that they likely caught the virus from a common
source. If they're sequences are different in is that
they're likely caught the virus from different place as
they may have a common source further back in
history that viruses life. But it's genetic sequence has
changed as it's been passed to give her people. The
more different sequences there are more likely it is
that the virus had more time to circulate and has
passed through more places. If anything in Wuhan in
December was exactly the same state that's been in
constant thing they call cancels the spinoffs. Always
had a thing Wuhan in December was already. The
spirit of a couple of different mind variants of the box.
And that again suggests there may be divisive things
that can I think a little bit longer than they would
realize. The team also said that the multiple early
sequences found likely means that one on seafood
market was not the primary source. We nodded in the
first. 170 cases in this and a little of them had
exposure to them not. The mother was sitting in and
thought that probably not the actual source of the
whole right again this. One of the final locations and
visited with the Wuhan institute of hydrology. This lab
and several others in the CE with a target of a
politically charged theory that the pirates have
accidentally leaked from a lap. Researchers have
stated that prior genomic sequencing showed that the
virus had natural origin it's. The ideas on terrorism
bank. It was not. Visiting each ER
is something toxic and perhaps as scientists
went out and you'll collect it is in. Riot act laboratory.
Was accident and introduced. Egypt and China.
Let leaks do look at it and fortunately it rid. We
did discuss with them did lot of security measures in
song. What we're doing around stuff pill and had they
gone back and check this out they didn't find anything.
While these laughs we're studying viruses. In some
backward ones. The teen says that they found it highly
unlikely that the virus had leaked from any of these
facility east. The most closely related debt for our
school all right TG citizen. Is and you actually
genetic sequences and a law bars. High altitude
policy alliance in the cheek and had the latest from
something like that. Not ruled anything out we cannot
rule anything sense count rule things out like that
although it did find is that the lab to skate was
extremely unlikely. In their report the team concluded
that most likely pathway transmission was from back to
an intermediary animal. We noted that there is a whole
range of corona viruses and that a number of these
abortive move to cross into humans such as sounds. A
range of viruses. That are related to south Kennedy 2
or evening found the net is still not close enough
today's apparent. Boss in July this is suggestion and
very closely related viruses and. However the
team says that they if not fully ruled out any here case.
This for more actively laying ground work for future
science research and her eight years and months
content. They're giving us and that got us focus
our T in this particular direction. Is most
likely. So police to happen now is the next steps
tracing back the first cases. What the markets to
negotiate happens traced back to the supporters of
the market and see if they have a mutual spikes of
antibodies I don't is that we know. Susceptible and we
should look at whether we have concentrations. If this
can't get it hasn't hide anything it should have driven
this point it in action anywhere is actually an infection
every hair. So we need to really think disease
surveillance. As population increases. Encroached.
Upon in areas where wild animals. As we continue to
have printed teens we will see more viruses just being
friendly animals to humans. And we're going to see
more disease emergency facts.