Millions are waiting for vaccine for covid -19 ,but still time until 2021
A vaccine would normally take years, if not decades, to develop. Researchers hope to achieve the same amount of work in only a few months.
Most experts think a vaccine is likely to become widely available by mid-2021, about 12-18 months after the new virus, known officially as Sars-CoV-2, first emerged.
That would be a huge scientific feat and there are no guarantees it will work.
Four coronaviruses already circulate in human beings. They cause common cold symptoms and we don't have vaccines for any of them.So why and when we have vaccine to be used?
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Researchers do not work for viruses causing common cold because of the expensiveness of antiviral drugs and vaccines and the self-limiting entity of those viruses. However, in the case of perilous respiratory viruses (such as Influenza and SARS-COV-2) there are many researches. Because of the natural tendency of those viruses to mutate, the efforts confront loads of hampers. So even if we possess the vaccines in mid-2021, we have drastic number of mutants that can be vaccine resistant and cause the pandemic to be continued.
During 16 years as a researcher at the US Food abd Drug Administration I witnessed vaccines that took decades to establish Safety and Effectiveness. I will not take a vacine against COVID-19 that has been rushed. I might take a rushed vaccine against Ebola virus, having some strains a mortality rate over 90% but not a rushed vaccine against COVID-19 (SARS CoV2) having a global mortality rate of 4% (or less). It seems that Risk/Benefit is being overlook.
Dear friend ,now millions are waiting for successful vaccine ,that people rely on ,and debate in America about this vaccine ,and its safety and activity is going on .
After a few years there will be a vaccine. It shoud be tested for a long time first for side effects!
After vaccine preparation, it required testing. This is to be handled very carefully and require much time.
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