As I wrote a short while ago, I think a vaccine is possible as it appears that exposure to SARS have created an immune response for SARS-CoV-2, or COVID-19.
And this preliminary report regarding one of the vaccines being tested confirms that.
The vaccine is the first to be tested in the United States to generate late-stage data. The companies said an early analysis of the results showed that individuals who received two injections of the vaccine three weeks apart experienced more than 90% fewer cases of symptomatic Covid-19 than those who received a placebo. For months, researchers have cautioned that a vaccine that might only be 60% or 70% effective.
“I’ve been in vaccine development for 35 years,” William Gruber, Pfizer’s senior vice president of vaccine clinical research and development, told STAT. “I’ve seen some really good things. This is extraordinary.” He later added: “This really bodes well for us being able to get a handle on the epidemic and get us out of this situation.”
It is still preliminary, and the stage 3 trial is not over yet. There are side effects to the vaccine, as to all vaccines, and currently they seem to be worse than for example flu shots, but comparable.
It is also unknown how long the vaccine would be able to protect against COVID-19, but I am still hopeful when I think back to what I mentioned above.