Some fear the federal government, under pressure from President Trump, may approve a vaccine before it is adequately studied for safety and effectiveness. Harris did not refer to any specific vaccine candidate.
And I do think there is a possibility that the clinical trials - albeit very low, as I said before, extremely low - but there is a possibility that the trials read out before the end of October.
Tedros appealed to people opposed to vaccination to do their own research. "This expertise and experience will be important in ensuring that COVAX - as a global effort to procure and deliver safe and effective COVID-19 vaccines, on an accelerated timeframe, and at an unprecedented scale - can protect the most at-risk, wherever they may be in the world".
"We believe that in the immediate absence of a vaccine, testing of passengers in aviation provides the best and most effective frontline defence".
Some health experts warned against its use as the "Sputnik V" vaccine - named in homage to the world's first satellite launched by the Soviet Union - had not completed its phase-three trial, which involves wide-scale testing with thousands of participants.
Hundreds of millions of people have received the MMR vaccine since it was developed almost 50 years ago. Among those who have received it are one of President Vladimir Putin's daughters and Defense Minister Sergei Shoigu. The National Academies are preparing the report, called a "consensus study", at the request of the National Institutes of Health (NIH) and Centers for Disease Control and Prevention (CDC). It also said its plans were still hypothetical, noting, "The Covid-19 vaccine landscape is evolving and uncertain, and these scenarios may evolve as more information is available".
Transporting and storing a COVID-19 vaccine could be a "huge logistical problem", said Dr. Eric Toner, a senior scholar at the Johns Hopkins Center for Health Security who co-authored a framework for distributing and allocating COVID-19 vaccines.
Now under development by World Health Organization, the COVAX allocation framework will guide how and where UNICEF, PAHO and other procurers working on behalf of participating countries supply COVID-19 vaccines that are secured by the Facility.
"The planning does need to start now and has already started among my team and external stakeholders thinking about both priority groups about who would be first in line to get the vaccine as well as how we do the distribution", explained Dr. Cohen.
The four stages of a vaccine trial are enumerated in the chart below. But is it possible to have a safe and timely vaccine?
"Trying to propose that there is going to be a vaccine available before the election actually may undermine people's trust in the process to develop an efficacious and safe vaccine", Khan said.
The coronavirus has so far sickened more than 6.3 million in the United States, resulting in more than 190,000 deaths.
According to The Lancet article, the vaccine has a "good safety profile" and induced strong humoral and cellular immune responses, as per phase 1/2 studies conducted in two hospitals in Russian Federation.
US Court Denies Ex-Trump Adviser Flynn's Bid to Halt Criminal Case
Flynn was the only person charged in special counsel Robert Mueller's investigation who had been a White House official. Sullivan, Rao continued, voided his impartiality by acting as a party in the case before the appeals court.