{"id":5811,"date":"2020-03-31T19:01:32","date_gmt":"2020-03-31T23:01:32","guid":{"rendered":"https:\/\/drealfmgrenada.com\/?p=5811"},"modified":"2020-03-31T19:01:32","modified_gmt":"2020-03-31T23:01:32","slug":"the-timetable-for-a-coronavirus-vaccine-is-18-months-experts-say-thats-risky","status":"publish","type":"post","link":"https:\/\/drealfmgrenada.com\/index.php\/2020\/03\/31\/the-timetable-for-a-coronavirus-vaccine-is-18-months-experts-say-thats-risky\/","title":{"rendered":"The Timetable For A Coronavirus Vaccine Is 18 Months, Experts Say That\u2019s Risky"},"content":{"rendered":"

(CNN) \u2013<\/strong>\u00a0Eighteen months might sound like a long time, but in vaccine years, it\u2019s a blink.<\/p>\n

That\u2019s the long end of the Trump administration\u2019s time window for developing a coronavirus vaccine, and some leaders in the field say this is too fast \u2014 and could come at the expense of safety.<\/p>\n

The estimated time made headlines last month, when Trump remarked at a televised Cabinet Room meeting with pharmaceutical executives that a vaccine could be ready in \u201cthree to four months.\u201d There, in front of TV cameras, Dr. Anthony Fauci, the head of the National Institute of Allergy and Infectious Diseases (NIAID), poured cold water on Trump\u2019s estimate, saying it would be more like a year to a year and a half.<\/p>\n

Ever since, that estimate of 12-18 months has become gospel, its appearance in media stories ubiquitous. But medical experts and scientists with firsthand experience developing vaccines are skeptical.<\/p>\n

\u201cTony Fauci is saying a year to 18 months \u2014 I think that\u2019s optimistic,\u201d said Dr. Peter Hotez, a leading expert on infectious disease and vaccine development at Baylor College of Medicine. \u201cMaybe if all the stars align, but probably longer.\u201d<\/p>\n

Dr. Paul Offit, the co-inventor of the successful rotavirus vaccine, put it more bluntly.<\/p>\n

\u201cWhen Dr. Fauci said 12 to 18 months, I thought that was ridiculously optimistic,\u201d he told CNN. \u201cAnd I\u2019m sure he did, too.\u201d<\/p>\n

Vaccines development typically measured in years, not months<\/strong><\/p>\n

As the number of U.S. coronavirus deaths surges past 3,000, the pressure on the scientific community to find a vaccine is immense. In just a few weeks, the virus has jammed the gears of a robust economy and destroyed 3.3 million jobs. Fear is off the charts, and with that comes the pressure to find a fix yesterday.<\/p>\n

On March 16, two weeks after the Cabinet meeting, the first federally funded trial for the novel coronavirus \u2014 officially known as SARS-CoV-2 \u2014 kicked off at the Kaiser Permanente Washington Health Research Institute in Seattle. On Friday, it expanded to Emory University in Atlanta. Forty-five volunteers in the Seattle and Atlanta communities are participating in the first phase of the trial, which Fauci said was \u201claunched in record speed.\u201d (Although several vaccines are in development, only one other clinical trial is underway, in China.)<\/p>\n

The problem is, experts say, the oft-stated timetable is ambitious at best.<\/p>\n

\u201cI don\u2019t think it\u2019s ever been done at an industrial scale in 18 months,\u201d said Dr. Amesh Adalja, a senior scholar focused on emerging infectious disease at the Center for Health Security at Johns Hopkins University. \u201cVaccine development is usually measured in years, not months.\u201d<\/p>\n

Vaccine trials typically start with testing in animals before launching into a three-phase process. The first phase involves injecting the vaccine into a small group of people to assess safety and monitor their immune response. The second ramps up the number of people \u2014 often into the hundreds, and often including more members of at-risk groups \u2014 for a randomized trial. If the results are promising, the trial moves to phase-three test for efficacy and safety with thousands or tens of thousands of people, according to the US Centers for Disease Control and Prevention.<\/p>\n

Dr. Emily Erbelding, an infectious disease expert at NIAID \u2014 which is part of the National Institutes of Health \u2014 said the typical vaccine takes between eight and 10 years to develop. While she is careful not to contradict her boss\u2019s timeline \u2014 although she did say \u201c18 months would be about as fast as I think we can go\u201d \u2014 she acknowledged that the accelerated pace will involve \u201cnot looking at all the data.\u201d<\/p>\n

\u201cBecause we are in a race here to beat back this epidemic and a vaccine is very important, people might be willing to take a chance on just going quickly into phase two,\u201d Erbelding told CNN. \u201cSo the 18 months would rely upon speeding things up.\u201d<\/p>\n

Volunteers in each phase need to be monitored for safety, Erbelding said. \u201cUsually, you want to follow their immune response for at least a year,\u201d she said.<\/p>\n

But that is not what will be happening in the current study in Seattle and Atlanta, where researchers will test animals and humans in parallel, as opposed to sequentially, according to Stat, a health news website produced by Boston Globe Media.<\/p>\n

CNN reached out to Kaiser about the potential tradeoffs associated with a quickened timeline, but researchers at the organization were unavailable to comment.<\/p>\n

Walt Orenstein, a professor of medicine at Emory and the former director of the US National Immunization Program, said the tradeoff is a difficult balancing act.<\/p>\n

\u201cIf you want every \u2018t\u2019 crossed and \u2018i\u2019 dotted, how many more people will die or suffer from Covid-19?\u201d he said. \u201cIt\u2019s not an easy decision, it is a breakneck speed for moving things.\u201d<\/p>\n

Orenstein added that while there are likely lessons available from past efforts to develop vaccines against SARS and MERS, it will be tough to complete the process in 18 months, though he said it\u2019s feasible.<\/p>\n

\u201cI think the reason it will be moving that fast is we have such a serious problem,\u201d he said. \u201cThe disease is spreading like wildfire.\u201d<\/p>\n

In rare cases, faulty vaccine trials have proven harmful or even deadly in humans.<\/p>\n

Mark Feinberg, president and CEO of the International AIDS Vaccine Initiative, told Stat that while he recognizes the importance of animal trials, the urgency of the current public emergency makes it worth the tradeoff.<\/p>\n

\u201cWhen you hear predictions about it taking at best a year or a year and a half to have a vaccine available \u2026 there\u2019s no way to come close to those timelines unless we take new approaches,\u201d he told the site.<\/p>\n

Coronavirus vaccine candidate uses new, never-before-approved technology<\/strong><\/p>\n

The vaccine under examination was created using a new, potentially revolutionary technology platform that, if successful, could indeed cut months from the development process. However, the technology \u2014 called a messenger RNA vaccine \u2014 has never been approved as a product for distribution; this would be the first.<\/p>\n

Developed by NIAID scientists and researchers at Moderna, a Massachusetts biotech company, the experimental product \u2014 unlike most other licensed vaccines \u2014 does not use any part of the live virus. Rather, the researchers built their vaccine from the genetic information on the coronavirus provided by China. Called mRNA-1273, the vaccine uses messenger RNA (ribonucleic acid) to direct cells in the body to make proteins to prompt an immune response that prevents or fights disease.<\/p>\n

\u201cIt\u2019s a very elegant solution, and that\u2019s why they could go to vaccine trials so quickly, because all they need is a sequence of the virus,\u201d Adalja said. \u201cThey don\u2019t have to tinker with the virus to make a vaccine candidate. They can just make a vaccine candidate with genetic sequence of the virus.\u201d<\/p>\n

Still, Adalja said he thinks the process will exceed 18 months, due to the possibility of clinical-trial or manufacturing issues.<\/p>\n

At a March 26 White House briefing, Fauci stuck to his timeline, saying that he plans to expedite the process in part with a financial gamble: by encouraging companies to launch production even before the vaccine has been proven to work.<\/p>\n

\u201cBecause once you know it works, you can\u2019t say, \u2018Great, it works, now, give me another six months to produce it,’\u201d he said.
\nFauci added that the federal government would help foot the bill.<\/p>\n

\u201cWe\u2019ve put hundreds of millions of dollars into companies to try and make vaccines,\u201d he said. \u201cI wouldn\u2019t hesitate to do that for a moment now.\u201d<\/p>\n

Offit, the director of the Vaccine Education Center at Children\u2019s Hospital of Philadelphia, worries that the fast-tracking could cause more harm than good.<\/p>\n

\u201cRemember: You\u2019re giving this vaccine, likely, to healthy people \u2014 who are not the people typically who are dying from this infection,\u201d he said. \u201cSo you better make sure that you are holding it to a high standard of safety.\u201d<\/p>\n

Fauci, who did not respond to a request for comment for this story, acknowledged the importance of safety in his March 26 remarks.<\/p>\n

\u201cThe worst possible thing you do is vaccinate somebody to prevent infection and actually make them worse,\u201d he said.
\nDevastating vaccine failures<\/p>\n

The World Health Organization estimates that vaccines save between 2 and 3 million lives a year. But vaccine history is dotted with devastating failures, in which people who got a dose fared far worse than they would have without it.<\/p>\n

In the 1960s, a test for an RSV (human respiratory syncytial virus) vaccine failed to protect many infants from getting the disease and led to worse symptoms than usual. It was also linked to the deaths of two toddlers.<\/p>\n

In 1976, President Gerald Ford\u2019s administration reacted at speed to a novel swine flu outbreak, ignoring the World Health Organization\u2019s words of caution and vowing to vaccinate \u201cevery man, woman and child in the United States.\u201d After 45 million people were vaccinated, the flu turned out to be mild. Worse, researchers discovered that a disproportionately high number of the vaccinated \u2014 roughly 450 in all \u2014 had developed Guillain-Barr\u00e9 syndrome, a rare disorder in which the body\u2019s immune system attacks the nerves, leading to paralysis. At least 30 people died. Upon discovery of the risk, the program was terminated in late 1976. A crush of lawsuits against the federal government followed.<\/p>\n

In 2017, a rushed campaign \u2014 endorsed by WHO \u2014 to vaccinate nearly 1 million children for mosquito-borne dengue in the Philippines was halted for safety reasons. The Philippine government indicted 14 state officials in connection with the deaths of 10 vaccinated children, saying the program was launched \u201cin haste.\u201d<\/p>\n

Keymanthri Moodley, a professor of bioethics at Stellenbosch University in South Africa, said accelerated trials increase the odds of a high-profile failure, which can bring about other unintended consequences.<\/p>\n

\u201cThe risk of a failed vaccine to other well established immunisation programs is high,\u201d Moodley wrote in an email to CNN. \u201cIt would fuel the agenda of the anti-vax movement and deter parents from immunising their children with other safe vaccines.\u201d<\/p>\n

How long did it take for rotavirus, Ebola, measles and SARS?<\/strong><\/p>\n

Historically, the timelines for bringing vaccines to bear on other pathogens show a much longer arc than 18 months.<\/p>\n

In 2006, the vaccine co-developed by Offit was introduced for rotavirus \u2014 which caused severe diarrhea in infants \u2014 significantly blunting the disease. The entire effort spanned 26 years; the trial period took 16 years, he told CNN.<\/p>\n

In November 2019, WHO prequalified a vaccine for Ebola, meaning health officials could start using it in at-risk countries, like the Democratic Republic of the Congo, where hundreds of thousands have been vaccinated. WHO said it was the fastest prequalification process it had ever conducted. The story of the vaccine\u2019s development is complex, but all told, it took about five years to get a licensed product, said Seth Berkley, CEO of Gavi, the Vaccine Alliance, in a recent TED interview.<\/p>\n

Even back in the 1960s, when regulations were comparatively lax, it took four years for the mumps and measles vaccine to be approved, Offit said.<\/p>\n

\u201cThe consent form was a three-by-five (inch) index card that says, \u2018I allow my child to participate in a BLANK trial,\u2019 and then you would sign it,\u201d Offit said. \u201cThat could never happen today. And that\u2019s the fastest it could be done.\u201d<\/p>\n

Occasionally a promising vaccine can languish for lack of public interest.<\/p>\n

The SARS epidemic broke out in 2003, but it wasn\u2019t until 2016 that a vaccine \u2014 developed by Hotez\u2019s team in Texas \u2014 was ready for trial.<\/p>\n

\u201cIt looked really good \u2014 it was protective, it was safe,\u201d Hotez, the dean of the National School of Tropical Medicine at the Baylor College of Medicine in Houston, told CNN. \u201cBut the problem was we couldn\u2019t raise any money.\u201d<\/p>\n

He is looking for funding to reboot it and says the vaccine may partially protect against Covid-19, the disease caused by the current coronavirus, which is in the same viral family as SARS.<\/p>\n

\u201cHad investments been made previously, we potentially could have a vaccine ready to go now,\u201d Hotez testified to Congress last month.<\/p>\n

Dr. Mike Ryan, executive director of WHO\u2019s health emergencies programme, said testing new vaccines takes time.<\/p>\n

\u201cMany people are asking, \u2018Well why do we have to test the vaccines? Why don\u2019t we just make the vaccines and give them to people?\u2019 Well the world has learned many lessons in the mass use of vaccines and there\u2019s only one thing more dangerous than a bad virus, and that\u2019s a bad vaccine,\u201d Ryan said. \u201cWe have to be very, very, very careful in developing any product that we\u2019re going to inject into potentially most of the world population.\u201d<\/p>\n

Sprinting a marathon on the front lines<\/strong><\/p>\n

Although just one NIH-funded trial is underway, dozens of companies and academics around the world have entered the race. Researchers are doing their best to sprint through the marathon.<\/p>\n

Dr. David Dowling of Boston Children\u2019s Hospital has been putting in 17-hour days \u2014 all while taking care of his two toddlers with his wife, who also works as a scientist.<\/p>\n

\u201cSaturdays I try and take time off,\u201d he said. \u201cBut then on Sunday I try to do maybe a nine- or 10-hour day.\u201d<\/p>\n

Dowling is the project manager of a lab that is striving to develop a \u201cprecision vaccine\u201d for the novel coronavirus that would protect the most vulnerable group: senior citizens.<\/p>\n

The story of how the lab, led by Dr. Ofer Levy, became involved with coronavirus offers a glimpse into the sense of urgency of some in the federal government.<\/p>\n

Before the outbreak, the team had been working on a flu vaccine that would protect the elderly by using immune-boosting molecules called adjuvants.<\/p>\n

When the lab, which operates in a building at Harvard Medical School, learned of the coronavirus outbreak in January, Dowling said, they sent an email to NIAID essentially asking if they could simply repurpose their flu contract for the coronavirus.<\/p>\n

\u201cThey emailed back in like 30 seconds,\u201d he said. \u201cIt was like, \u2018Yes. Please do this as quickly as possible.’\u201d<\/p>\n","protected":false},"excerpt":{"rendered":"

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