Covid19mathblog.com
Documented that Children spread covid 50% less than adults – IN FACT All children transmission came from adults! – https://www.nationalgeographic.com/science/2020/12/we-now-know-how-much-children-spread-coronavirus/
“National Geographic was given exclusive access to the results from an Icelandic study that provides definitive evidence of how much children contribute to coronavirus spread. Researchers with the nation’s Directorate of Health and deCODE genetics, a human-genomic company in Reykjavik, monitored every adult and child in the country who was quarantined after potentially being exposed this spring, using contact tracing and genetic sequencing to trace links between various outbreak clusters. This 40,000-person study found that children under 15 were about half as likely as adults to be infected, and only half as likely as adults to transmit the virus to others. Almost all the coronavirus transmissions to children came from adults.
“They can and do get infected and transmit to others, but they do both less frequently than adults,” says Kári Stefánsson, the chief executive of deCODE.”
Ventilation once again is key. And scary to think strong recirculating flow can create spread in far distances as noted in this study – https://jkms.org/DOIx.php?id=10.3346/jkms.2020.35.e415
“Results
A total of 3 cases were identified in this outbreak, and maximum air flow velocity of 1.2 m/s was measured between the infector and infectee in a restaurant equipped with ceiling-type air conditioners. The index case was infected at a 6.5 m away from the infector and 5 minutes exposure without any direct or indirect contact.
Conclusion
Droplet transmission can occur at a distance greater than 2 m if there is direct air flow from an infected person. Therefore, updated guidelines involving prevention, contact tracing, and quarantine for COVID-19 are required for control of this highly contagious disease.”
Once again another confirmation Covid began late 2019
“Scientists in Italy have identified a sample of the novel coronavirus collected from a young boy late last year that they say is genetically identical to the earliest strain isolated in the Chinese city of Wuhan almost a year ago.
The sample was collected on December 5, 2019 in Milan from a boy who was first thought to have contracted measles, according to the researchers from the University of Milan.
It was a “100 per cent match” of a genome segment of the first Sars-CoV-2 viral strain collected from a seafood market worker in Wuhan on December 26, they said.
“These findings, in agreement with other evidence of early Covid-19 spread in Europe, advance the beginning of the outbreak to late autumn 2019,” said the team led by Professor Elisabetta Tanzi.”
US numbers came off slightly – at least below 3K death
Looks like there is a death revision for Washington. CA still leading confirmation. TX leading death
Confirmation and death are lead by LA CA followed by Cook IL – the same 2 that have been showing a problem for over a month
Need to fix hot spots before trying to fix the entire US
Since Oct both LA and Cook was indicated as an issue – yet here we are LA is astronomical in its confirmation – Cook is kind of holding flat but deaths in both are rising.
