The first participant in an American clinical trial for a vaccine to protect against the new coronavirus will receive an experimental dose on Monday, according to a government official.
The US National Institutes of Health is funding the trial, which is taking place at the Kaiser Permanente Washington Health Research Institute in Seattle. The official who disclosed plans for the first participant spoke on condition of anonymity because the move has not been publicly announced.
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Public health officials say it will take a year to 18 months to fully validate any potential vaccine.
Testing will begin with 45 young, healthy volunteers with different doses of shots co-developed by NIH and Moderna Inc. There's no chance participants could get infected from the shots, because they don't contain the virus itself. The goal is purely to check that the vaccines show no worrisome side effects, setting the stage for larger tests.
For most people, the new coronavirus causes only mild or moderate symptoms, such as fever and cough. For some, especially older adults and people with existing health problems, it can cause more severe illness, including pneumonia. The worldwide outbreak has sickened more than 156,000 people and left more than 5,800 dead. The death toll in the United States is more than 50, while infections neared 3,000 across 49 states and the District of Columbia.
The vast majority of people recover. According to the World Health Organization, people with mild illness recover in about two weeks, while those with more severe illness may take three weeks to six weeks to recover.
Dozens of research groups around the world are racing to create a vaccine as COVID-19 cases continue to grow. Importantly, they're pursuing different types of vaccines – shots developed from new technologies that not only are faster to produce than traditional inoculations but might prove more potent. Some researchers even aim for temporary vaccines, such as shots that might guard people's health a month or two at a time while longer-lasting protection is developed.
Even if initial safety tests go well, "you're talking about a year to a year and a half" before any vaccine could be ready for widespread use, according to Dr. Anthony Fauci, director of NIH's National Institute of Allergy and Infectious Diseases.
That still would be a record-setting pace. But manufacturers know the wait – required because it takes additional studies of thousands of people to tell if a vaccine truly protects and does no harm – is hard for a frightened public.
US President Donald Trump has been pushing for swift action on a vaccine, saying in recent days that the work is "moving along very quickly" and he hopes to see a vaccine "relatively soon."
Today, there are no proven treatments. In China, scientists have been testing a combination of HIV drugs against the new coronavirus, as well as an experimental drug named remdesivir that was in development to fight Ebola. In the US, the University of Nebraska Medical Center also began testing remdesivir in some Americans who were found to have COVID-19 after being evacuated from a cruise ship in Japan.

Dr. Manfred Green, director of University of Haifa's international master's program in public health agrees that a vaccine to treat the coronavirus could take at least a year and a half until it reaches the general public.
Speaking at a press briefing hosted by the American Society of the University of Haifa, Green said, "Developing vaccines is extremely difficult. It takes years, not days or months. There are new technologies now that we hope will speed up that process. But if you think about it, even in the best scenario, even if a vaccine is available it would take several steps until it's ready for distribution to the general public. It would have to be tested on animals and then a small number of people first. So you're not going to vaccinate millions of people before it's been thoroughly tested. Even if a vaccine is produced very soon, it could take a year and a half until it's given to the public."
Addressing reports that Israeli scientists are on the cusp of developing the first vaccine against the virus, he went on to say: "Israel needs to be modest and make sure that we are involved in the process to develop the vaccine. But the US, China and Europe also have advanced infrastructure and talented scientists working at this. It's a joint effort. We need international cooperation."
Dr. Green is renowned for his work in emergencies resulting from infectious diseases, epidemiology of cancer and evidence-based medicine, previously serving as Head of the Public Health Branch for the IDF, and Founding Director of the Israel Center for Disease Control.