By David
Ljunggren , Steve Scherer
OTTAWA
(Reuters) - Canada’s drug regulator on Friday approved Johnson & Johnson’s
COVID-19 vaccine, the fourth such shot to be given the green light, as Ottawa
brought forward deliveries of millions of Pfizer doses.
“To people
watching at home right now who are looking forward to getting their shot - your
turn is coming,” Prime Minister Justin Trudeau said in a televised briefing.
Trudeau also
said Pfizer Inc had agreed to accelerate deliveries, shipping a total of 3.5
million doses ahead of schedule by the end of May.
Deliveries
to Canada have been slow - lagging many other developed nations - even though
it has ordered more doses per capita than any other country.
With a
population of almost 38 million, Canada now expects 36.5 million doses of
previously approved vaccines to be delivered by the end of June.
The
regulator authorized the Pfizer-BioNTech and Moderna Inc vaccines in December,
and AstraZeneca’s in February. Each of these requires two shots.
The
government of Ontario, Canada’s most populous province, said on Friday it would
extend the maximum period between first and second doses to four months,
speeding up access to a first shot.
In addition
to seniors and healthcare workers, Ontario now plans to prioritize shots for
those who are unable to work from home, including teachers, and it aims to
administer at least one dose of a vaccine to all adults over 60 by early June,
officials said.
The J&J
vaccine is the first single-dose vaccine approved in Canada and it can be
stored in normal fridges, while the Pfizer-BioNTech and Moderna shots must be
kept in freezers.
---- Canada has pre-ordered 10 million
doses of the J&J vaccine, with options to order up to 28 million more. In a
statement, the Brunswick, New Jersey-based company said it planned to provide
the 10 million doses by the end of September.
U.S. President
Joe Biden said earlier this week that J&J was behind in manufacturing. The
company was due to have shipped 37 million doses to the United States by the
end of this month but looks set to fall well short of that.
So far, 4.2%
of the Canadian population has received at least one dose of a coronavirus
vaccine, according to volunteer-run tracking site COVID-19 Tracker Canada,
compared with 16% in the United States.
https://www.reuters.com/article/us-health-coronavirus-canada-vaccine/canada-approves-jjs-covid-19-vaccine-moves-up-some-pfizer-deliveries-idUSKBN2AX1R5
B117
coronavirus variant might soon become dominant in Germany: RKI head
March 5, 2021 8:38 AM
By Reuters Staff
BERLIN
(Reuters) - A more contagious variant of the coronavirus first detected in
Britain might soon become the predominant strain in Germany, making it hard to
stop its spread, the head of the Robert Koch Institute said on Friday.
Lothar
Wieler said the B117 variant now made up more than 40% of coronavirus cases in
Germany, compared to about 6% of cases four weeks ago.
“It is
foreseeable that B117 will soon be the predominant variant in Germany and then
it will be even more difficult to keep the virus in check because B117 is more
contagious and even more dangerous in all age groups,” he said.
https://www.reuters.com/article/us-health-coronavirus-germany-variants/b117-coronavirus-variant-might-soon-become-dominant-in-germany-rki-head-idUSKBN2AX0RV
World no
closer to answer on COVID origins despite WHO probe - expert
March 5, 2021 9:08 AM
By Reuters Staff
SHANGHAI
(Reuters) - Despite a high-profile visit to China by a team of international
experts in January, the world is no closer to knowing the origins of COVID-19,
according to one of the authors of an open letter calling for a new
investigation into the pandemic.
“At this
point we are no further advanced than we were a year ago,” said Nikolai
Petrovsky, an expert in vaccines at Flinders University in Adelaide, Australia,
and one of 26 global experts who signed the open letter, published on Thursday.
In January,
a team of scientists picked by the World Health Organization (WHO) visited
hospitals and research institutes in Wuhan, the central Chinese city where the
coronavirus was identified, in search of clues about the origins of COVID-19.
But the
mission has come under fire, with critics accusing the WHO of relying too much
on politically compromised Chinese fieldwork and data.
Team members
also said China was reluctant to share vital data that could show COVID-19 was
circulating months earlier than first recognised.
The open
letter said the WHO mission “did not have the mandate, the independence, or the
necessary accesses to carry out a full and unrestricted investigation” into all
theories about the origins of COVID-19.
“All
possibilities remain on the table and I have yet to see a single piece of
independent scientific data that rules out any of them,” said Petrovsky.
At a press
briefing to mark the end of the WHO visit to Wuhan, mission head Peter Ben
Embarek appeared to rule out the possibility that the virus leaked from a
laboratory in Wuhan.
But
Petrovsky said it “doesn’t make any sense” to rule any possibility out, and
said the aim of the open letter was “to get an acknowledgement globally that no
one has yet identified the source of the virus and we need to keep searching.”
“We need an
open mind and if we close down some avenues because they are considered too
sensitive, that is not how science operates,” he said.
https://www.reuters.com/article/us-health-coronavirus-china-who/world-no-closer-to-answer-on-covid-origins-despite-who-probe-expert-idUSKBN2AX0U1
Next, some very useful vaccine
links kindly sent along from a LIR reader in Canada. The links come from a most
informative update from Stanford Hospital in California.
World Health Organization -
Landscape of COVID-19 candidate vaccines . https://www.who.int/publications/m/item/draft-landscape-of-covid-19-candidate-vaccines
NY Times Coronavirus Vaccine
Tracker . https://www.nytimes.com/interactive/2020/science/coronavirus-vaccine-tracker.html
Stanford Website . https://racetoacure.stanford.edu/clinical-trials/132
FDA information . https://www.fda.gov/media/139638/download
Regulatory Focus COVID-19
vaccine tracker . https://www.raps.org/news-and-articles/news-articles/2020/3/covid-19-vaccine-tracker
Some more useful Covid links.
Johns Hopkins Coronavirus
resource centre
https://coronavirus.jhu.edu/map.html
Rt Covid-19
https://rt.live/
The Spectator
Covid-19 data tracker (UK)
https://data.spectator.co.uk/city/national
Technology Update.
With events happening fast in the development of solar power and
graphene, I’ve added this section. Updates as they get reported. Is converting
sunlight to usable cheap AC or DC energy mankind’s future from the 21st
century onwards.
'Egg carton'
quantum dot array could lead to ultralow power devices
Date:
March 4, 2021
Source:
University of Michigan
Summary:
A new path toward sending and receiving information with single photons
of light has been discovered by an international team of researchers.
Their
experiment demonstrated the possibility of using an effect known as nonlinearity
to modify and detect extremely weak light signals, taking advantage of distinct
changes to a quantum system to advance next generation computing.
Today, as
silicon-electronics-based information technology becomes increasingly throttled
by heating and energy consumption, nonlinear optics is under intense
investigation as a potential solution. The quantum egg carton captures and
releases photons, supporting "excited" quantum states while it
possesses the extra energy. As the energy in the system rises, it takes a
bigger jump in energy to get to that next excited state -- that's the
nonlinearity.
"Researchers
have wondered whether detectable nonlinear effects can be sustained at
extremely low power levels -- down to individual photons. This would bring us
to the fundamental lower limit of power consumption in information
processing," said Hui Deng, professor of physics and senior author of the
paper in Nature .
"We
demonstrated a new type of hybrid state to bring us to that regime, linking
light and matter through an array of quantum dots," she added.
The
physicists and engineers used a new kind of semiconductor to create quantum
dots arranged like an egg carton. Quantum dots are essentially tiny structures
that can isolate and confine individual quantum particles, such as electrons
and other, stranger things. These dots are the pockets in the egg carton. In
this case, they confine excitons, quasi-particles made up of an electron and a
"hole." A hole appears when an electron in a semiconductor is kicked
into a higher energy band, leaving a positive charge behind in its usual spot.
If the hole shadows the electron in its parallel energy band, the two are
considered as a single entity, an exciton.
In
conventional devices -- with little to no nonlinearity -- the excitons roam
freely and scarcely meet with each other. These materials can contain many
identical excitons at the same time without researchers noticing any change to
the material properties.
However, if
the exciton is confined to a quantum dot, it becomes impossible to put in a
second identical exciton in the same pocket. You'll need an exciton with a
higher energy if you want to get another one in there, which means you'll need
a higher energy photon to make it. This is known as quantum blockade, and it's
the cause of the nonlinearity.
But typical
quantum dots are only a few atoms across -- they aren't on a usable scale. As a
solution, Deng's team created an array of quantum dots that contribute to the
nonlinearity all at once.
More
https://www.sciencedaily.com/releases/2021/03/210304125324.htm?utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+sciencedaily%2Fmatter_energy%2Fgraphene+%28Graphene+News+--+ScienceDaily%29
Finally, I've been searching for articles, updates on the flying skills
of non flying pilots, etc. ahead of when we resume more normal flying
conditions again. In addition to possibly rusty pilots, they will be flying
possibly rusty planes out of mothballing. Bad weather/icing skills might
need refreshing, but I can find little in public on airline plans at handling
safety after "normality" returns. Just general “safety is our
top priority” self-serving airline statements.
Are pilots still using simulators and being paid to keep up skill
levels?
Supposedly we are just a few months off from all the vaccinations
allowing for the return of more widespread travel, yet there seems to be little
in the public domain about how this is going to happen safely.
Perhaps I'm a little early, but I do live under the southern flight path
into Heathrow. Normally planes are heading west before turning north over my
residential complex or the recreation park to my immediate west, before turning
east to integrate with the northern flight path and heading in to Heathrow.
Below, how easily things can go wrong even in normal times. Approx. 13
minutes.
How a Fatal Delay Caused this Aircraft to Crash Just After Takeoff
| Spanair 5022
https://www.youtube.com/watch?v=5sZngFtEkOQ
This weekend’s musical diversion. In the third movement, Vivaldi invents the (admittedly
very high class,) Bavarian oompah band, Italian style. Not many people know
that, including Vivaldi.
Approx. 9 minutes. At 6.25 for those
pressed for time
A. VIVALDI:
Concerto for Violin, 2 Oboes, 2 Horns and Bassoon in F major RV 571, Les Ambassadeurs
https://www.youtube.com/watch?v=hsvF_a94o_o
This week’s chess lesson, the world
champion humbled in a blitz.
Magnus
Carlsen Crushed in 26 Seconds!!!
https://www.youtube.com/watch?v=fQ1P7JUadZE
Boom/bust cycles are not
inevitable and would not occur were it not for the inflationary monetary
policies that always precede recessions.
Peter D. Schiff.
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