Top US Expert labels Moderna Covid Vaccine Results as Stunningly Impressive
By MYBRANDBOOK
The early result from Moderna's Covid-19 vaccine trial was declared as stunningly impressive by the United States' top infectious disease scientist Anthony Fauci. He called the findings an emphatic validation of experimental mRNA technology that some had doubted.
"I must admit that I would have been satisfied with 70 or at the most 75 percent efficacy," he said.
"The idea that we have a 94.5 percent effective vaccine is stunningly impressive. It is really a spectacular result that I don't think anybody had anticipated would be this good."
Fauci leads the National Institutes of Allergies and Infectious Diseases (NIAID), which began co-developing the vaccine with the US biotech company in January, shortly after China shared the genetic sequence of the new coronavirus.
The vaccine is based on a relatively new technology that uses a synthetic version of a molecule called "messenger RNA" to hack into human cells, and effectively turn them into vaccine-making factories
No vaccine based on this platform has ever been approved.
"There were many people who had reservations about using something that had not been tried and true over the years; in fact, some people even criticized us for that," said Fauci.
Fauci recalled that some had questioned whether the vaccine would prevent severe forms of Covid-19, not just mild or moderate cases -- and this too had been resoundingly answered.
"There were 11 severe events, none in the vaccine group -- 11 in the placebo group, so that settles the question of whether it prevents severe disease, which it definitely does."
It follows a similarly impressive result from American pharmaceutical firm Pfizer and its German partner BioNTech last week, which reported an efficacy of 90 percent for their vaccine.
Asked whether it was too early to say if mRNA technology had now been proven, Fauci -- who is usually known for his cautious statements -- said the jury was definitely in.
"I think when you have two vaccines like this, that have proven to be greater than 90 percent effective, I think that mRNA is here, it's established itself, it doesn't need to prove anything anymore.
"The data speak for themselves; it isn't me, it isn't my opinion -- look at the data," he said.
Traditional virus vaccines use actual viruses that have to be grown in chicken eggs or fetal cell lines and then weakened so they don't harm people -- a process that can take many months.
By contrast, the Covid-19 mRNA vaccines deliver the genetic information needed to create a protein that lies on the surface of the virus -- called the spike protein -- directly to cells in the human body, which then grow it.
This primes the immune system to make antibodies to the actual virus, and has the major advantage of shortening vaccine development time to a matter of weeks, once scientists have the genetic sequence of the protein they want to create.
While Moderna has basked in the spotlight, Fauci was keen to highlight the work of NIAID, which he said was responsible for developing a precise way to orient the spike protein molecule such that it elicited the strongest immune response.
Fauci said he was "certain" it would endure to some extent, as immune system cells called "memory B cells" remained on standby to generate new antibodies to the virus.
But for how long was unclear. "We don't know whether it's going to be a year, two years, three years, five years, we don't know," he said.
Looking forward, Fauci said he was worried about anti-vaccine sentiment in the United States, the country that has been the worst-hit by the pandemic.
"You've got to overcome that and convince people to get vaccinated, because a vaccine with a high degree of efficacy is of no use if nobody gets vaccinated.
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