[Sticky] Coronavirus Facts & News Thread.

wear a MASK because it substantially increases your odds of having a mild case, should you get infected" -- it's possible to get small OR large doses of COVID-19 🦇😷

this is why:

1. healthcare workers who seem to have heavy exposure seem to get it worse;

2. for some reason, in general some ppl also get it worse -- even young or health ppl -- some oddly get it worse. small viral dose vs large viral dose = mild or severe symptoms there is scholarly evidence begin to argue this point. China and Italy both have hypothesized it. New York Times just published a story on this, too: "These Coronavirus Exposures Might Be the Most Dangerous." so wear a MASK

1. protects u somewhat

2. protects others a lot

3. and makes it more likely you'll get mild, not severe, symptoms virus replicate but the smaller the dose, the longer it takes and the more time your immune system has to respond. if your immune system can begin producing antibodies against a small viral dose rather than larger, you have greater chance to keep symptoms mild.

first of all bats are not commonly eaten in china, but they are in indonesia. The virus found in wuhan was not first generation. There are cases of US cases being mistaken for flu, some from last year. I would be surprised if you guys never heard of any of this. 

Fact is US is too slow to wear masks because the lack of stockpile, and they ignored the 2 month warning from China. China is producing 200 million masks per day many exported to Europe, I guess the US isn't interested in it! 

I bought several cases for my mom who is now in Boston as I'm worried for her and she can't leave the US. 

 Awesome Things You Never Knew About the CDC (Centers for Disease Control)

1)The CDC was actually founded in 1992.
2)Before the founding of the CDC, there were a number of other departments and agencies that took its place.
3)The CDC is the public health institute of the United States.
4)Each state has its own center of disease control.
5)The CDC is the founding institute of the International Association of National Public Health Institutes.

https://mphprogramslist.com/100-awesome-things-you-never-knew-about-the-cdc-centers-for-disease-control/

@wei-nihao

do you have the sources that proves that the corona virus in Wuhan was not first generation. I live in Canada, we never receive any warnings. 

@lannie

Background. The outbreak of COVID-19 started in mid-December 2019 in Wuhan, Central China. Up to February 18, 2020, SARS-CoV-2 has infected more than 70,000 people in China, and another 25 countries across five continents. In this study, we used 93 complete genomes of SARS-CoV-2 from the GISAID EpiFluTM database to decode the evolution and human-to-human transmissions of SARS-CoV-2 in the recent two months. Methods. Alignment of coding-regions was conducted haplotype analyses using DnaSP. Substitution sites were analyzed in codon. Evolutionary analysis of haplotypes used NETWORK. Population size changes were estimated using both DnaSP and Arlequin. Expansion date of population size was calculated based on the expansion parameter tau (τ) using the formula t=τ/2u. Findings. Eight coding-regions have 120 substitution sites, including 79 non-synonymous and 40 synonymous substitutions. Forty-two non-synonymous substitutions changed the biochemical property of amino acids. No evident combination was found. Fifty-eight haplotypes were classified as five groups, and 31 haplotypes were found in samples from both China and other countries, respectively. The rooted network suggested H13 and H35 to be ancestral haplotypes, and H1 (and its descendent haplotypes including all samples from the Hua Nan market) was derived H3 haplotype. Population size of SARS-CoV-2 were estimated to have a recent expansion on 6 January 2020, and an early expansion on 8 December 2019. Interpretation. Genomic variations of SARS-CoV-2 are still low in comparisons with published genomes of SARS-CoV and MERS-CoV. Phyloepidemiologic analyses indicated the SARS-CoV-2 source at the Hua Nan market should be imported from other places. The crowded market boosted SARS-CoV-2 rapid circulations in the market and spread it to the whole city in early December 2019. Furthermore, phyloepidemiologic approaches have recovered specific direction of human-to-human transmissions, and the import sources of international infectious cases.

https://www.researchgate.net/publication/339351990_Decoding_evolution_and_transmissions_of_novel_pneumonia_coronavirus_SARS-CoV-2_using_the_whole_genomic_data