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It will take months to launch an anti- “Covid-19” vaccine for all who want it in the United States, let alone the rest of the world, and despite its importance, the vaccine is not a panacea to end the epidemic.
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“People shouldn’t think of vaccines as a lifeline. Vaccines, along with health measures, are a way to control this virus, but we are,” said Dr Paul Offitt, director of the Center for Vaccine Education at Children’s Hospital of Philadelphia and professor of immunization at the Perelman School of Medicine at the University of Pennsylvania. We need both. Vaccines won’t be magic … you can’t give up one for the other. “
Public health experts say how quickly life returns to normal will depend on a number of factors, including how well the vaccine works, how many people are willing to receive it, and how quickly and continuously it spreads. of the virus uncontrollably.
“There is an end to this,” said Dr. Anthony Fauci, president of the National Institute of Allergy and Infectious Diseases.
Fauci added: “If you have a very effective vaccine and we get most of the locals to get it, we can get back to some level of normality maybe by the end of 2021.”
According to Samuel Scarpino, an assistant professor at Northeastern University in Boston who heads the school’s Emerging Epidemiology Lab, even if a vaccine is approved this year, there won’t be enough to change the course of the epidemic. For many months.
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Companies have already started manufacturing hundreds of millions of doses of candidate vaccines, hoping to be approved (and they’re also set to phase out the same doses if the vaccines aren’t proven to be safe or effective enough).
US pharmaceutical company Pfizer, which produces one of the leading candidate vaccines against “Covid-19”, said it would apply for a license from the Food and Drug Administration later this month. It’s unclear how long it will take the Food and Drug Administration for this to happen, and many are awaiting approval before the end of the year.
However, it will take some time before adequate doses are delivered to the vast majority of the population. Health workers fighting “Covid-19” will receive the first vaccine, followed by first responders and vulnerable elderly people.
“We all want our lives to come back,” said Dr. Mary Bassett, director of the FXB Center for Health and Human Rights at Harvard University and a former health commissioner in New York City. “The vaccine will not achieve this goal because it cannot be distributed widely enough, quickly enough.
Experts point out that no vaccine works perfectly, despite the fact that the first publication of efficacy data for candidate vaccines from the American companies Pfizer and German BioNTech, has proven its 90% effectiveness against “Covid-19”.
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But even if every person received a vaccine with this effectiveness, not one in 10 people would be protected against “Covid-19”.
It is impossible to know who is protected for sure, which is why experts say that around 70% of the population will need to be vaccinated to ensure so-called herd immunity, which is enough protection to interrupt the chain of transmission and protect the vast majority of people.
Also, it is not known how long vaccine protection will last, while vaccine developers are hoping it will last at least one to two years.
Studies have shown that a small number of people have already contracted “Covid-19” a second time, and protection against the common cold, which often comes from the related Corona virus, only lasts for about six months.
Vaccine experts have made it clear that they expect vaccines to provide longer protection against natural infections, but it is too early to know.
The possibility of short-term protection against natural infections also means the public is unlikely to achieve herd immunity to infections, they said.
Without long-term protection, those infected would still be at risk and should continue to wear masks and take other health precautions.
Collective immunity will not be effective until the vaccines reach the majority of the population, which may take six months or more.
So the best weapons against “Covid-19” stay, wear a mask, social distancing, wash your hands and avoid crowds, like football matches, weddings and even family reunions.
Source: usatoday
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