Although the Sinovac vaccines is reported to have 50 % efficacy, it prevent death and serious complications if the 50 % do get infected. This is based on Results from Brazil and Chile. The other vaccinated 50% when infected will get no symtoms ,mild symptoms or moderate symptoms . Those with.mild symptoms like just a fever will recover within a few days . Moderate symtoms like cough and body ache might take longer. However these infected can spread to others. Sinovac vaccines do help in preventing 50 % of those vaccinated from getting infected and the other 50 % if do get infected, you do not need to go to hosiptal . You will recover.
concern is will economy and social activity fully recover and be like pre-pandemic level when these 50% are still getting infected (though not severe at all)?
even at 10% level....there is a huge risk of delay in social recovery
to avoid these, i see govn must prcure pfizer for the whole nation while they continue with other vaccine vaccination based on availability..
my objective is to have full pre-pandemic recovery
Viruses generally have to follow certain rules if they want to get ahead. Stealth is critical, because these pathogens are unable to thrive and reproduce alone. Instead, they invade host cells and rely on them to, first, decode their genetic information to produce components for new virus particles, next, assemble those components, and finally, release new viruses to infect more cells. If this process causes tissue damage that leads to organ failure, the virus risks perishing along with its host.
That’s why “nightmare” viruses – like those with 90% mortality – thankfully aren’t always very successful. To survive and thrive, a virus must operate like a spy in enemy territory, skilled at passing its genetic material from cell to cell without alerting the host’s immune response.
As we now know only too well, Sars-Cov-2 is far more of a menace, because it can cause severe acute respiratory syndrome in some patients, which may lead to between 1% and 7% mortality.
A successful spy must be a master of disguise, and so it is with viruses: if they want to evade recognition by immune cells, they must change their protein coat frequently. This is achieved via tiny alterations in their genetic material called mutations. The Goldilocks principle applies here: if the mutations are too subtle, the viral coat will be easily identified by existing antibodies, whereas if they are too drastic they might simply inactivate the virus. The mutations that allow viruses to fly under the radar fall somewhere in between. Influenza viruses, which use rapidly evolving ribonucleic acid (RNA) as their genetic material, are experts at this game.
Coronaviruses have RNA genomes too, but they are very large. That means that there are many more opportunities for mutations to go wrong – from the virus’s point of view. As a result, they have developed a sort of “proof-reading” mechanism that edits out mutations – meaning that they change a lot less rapidly than flu does. This is good news for us, and for vaccine development. But we still need more information to determine just how long a vaccine might be effective for.
How does a virus go on to achieve world domination? Getting from A to B is of the essence. Sars-Cov-2 rides droplets propelled by coughs and sneezes to board a new host. This is a more effective route of transmission than that used by non-respiratory viruses like Ebola, and its efficiency is increased if the virus particles are more stable and can survive on surfaces outside the body. This is why keeping a safe distance from each other and isolating patients is so useful in preventing new infections. Sars-Cov-2 also has a lipid-containing coat, so thorough handwashing with soap, which breaks down fats, can stop it in its tracks.
Haha if only the world listen to Trump, covid pandemic already end long ago. Trump suggests 'injection' of disinfectant to beat coronavirus and 'clean' the lungs
This book is the result of the author's many years of experience and observation throughout his 26 years in the stockbroking industry. It was written for general public to learn to invest based on facts and not on fantasies or hearsay....
probability
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Posted by probability > 2021-05-14 12:37 | Report Abuse
ok agree...