Posted by greedy44444 > 2020-08-09 08:04 | Report Abuse

Vaccine is coming soon.... that's for sure. Don't mislead public with your incorrect writing. Phase III need at least one year to complete ? Today is the year 1990 ? Today already 2020 !! Why so pessimistic ? Not happy to have vaccine to defeat the monstrous covid-19 ASAP ?

Posted by pBlue > 2020-08-09 08:59 | Report Abuse

How do we know that a vaccine can give you 1 year of protection? The way to find out is to give people the vaccine and wait 1 year to see what happens. It is not pessimism, it is just reality. We cannot computer model the immune system, because we do not know enough. So that is how long a phase II trial last.

An example of a Phase III is the Dengvaxia phase III trial which lasted 5 years. Eventually this vaccine had to restricted to use only on people who had been infected by Dengue once before due to fact it actually enhanced hemorrhagic dengue fever in uninfected people.

Right now the SinoVac Vaccine isn't in phase III, it is in Phase II. SinoVac and/or the media is being misleading.

Vaccine development isn't normally a fast process. There are set backs and unexpected complication. Take the development history of SARS-Cov1 vaccine, another coronavirus. 10 years of work was put into SARS-Cov1 vaccine from 2003 to 2013, until government and industrial funding ran out. 10 years and no vaccine was developed. Please consider that for a moment and ask yourself, why.