Scientists cautions Covid19 vaccine will take time to tell how long protection will last
Certainly, russia is not alone in viewing a vaccine in this light. china, where the virus first emerged, has also raced to make progress on a vaccine. A state-owned Chinese company is boasting that its employees, including top executives, received experimental shots even before the government approved testing in people.
And President donald trump, whose handling of the coronavirus pandemic has put his political fate in grave jeopardy, is hoping to get credit for his administration’s aggressive push for a vaccine, ideally one that arrives before election Day in November. Putin said the health Ministry gave its approval after the vaccine underwent the necessary tests and said one of his two adult daughters had been inoculated. No proof was offered and scientists in russia warned that more testing would be necessary to prove it is safe and effective. Nonetheless, officials said vaccination of doctors could start as early as this month and mass vaccination may begin as early as October. Scientists around the world have been cautioning that even if vaccine candidates are proven to work, it will take even more time to tell how long the protection will last.