Covid-19 Vaccine Update:4 Important Questions That Have Not Yet Been Answered

Covid-19 vaccine Update

How long will the vaccine prevent the disease?

Can coronavirus occur after vaccination?

Will the vaccine protect against the new strain of coronavirus?

How many doses of vaccine, how long should it be given?

Several questions about the vaccine have made the government, scientists and the general public think.

Fight against time. The time is now the biggest factor in the effort to quickly normalize public life around the world with the corona vaccine.

As of January 28, more than 82 million people around the world have been given a single dose of the vaccine.

Covid-19 vaccine Update
Covid-19 vaccine update

But even though vaccination has started in different countries, some issues remain unresolved.
Although the world’s largest immunization program has been launched, four important questions remain unanswered.

How long will the vaccine prevent the disease?

For the past few months, many have been thinking: How to get a vaccine, and has our immunity increased after being infected with the coronavirus?

The results of the first research on immunity in the medium and long term have already been published a year after the onset of the epidemic.

But one of the limitations of these studies is that little is known about its long-term effects on human health, as the vaccine takes a long time to develop.

However, according to the La Jolla Institute of Immunology in California, the immune system remains in the human body for at least about six months after recovering from a corona infection.

A similar study by the Department of Public Health in England found similar results. They say most patients recovering from covid will be free of the risk of re-infection for at least five months.

However, since the first infection did not occur more than five months ago, some scientists believe that immunity will last a long time, perhaps a few years.

But it is true that the same thing will not happen to all patients. Because everyone’s immune system is different and the chances of getting infected again depend on it.

The same thing will happen with vaccines.

“It’s hard to say how long the immunity will last,” said a virologist at the University of Leicester in Britain. Julian Tang, “Because we’ve just started vaccinating. The effects will be changed from patient to patient. It also depends on the type of vaccine being administered. But immunity can probably last from six months to a year.”

However, Professor Mayo Clinic in the United States. Andrew Badley is even more optimistic. He argues, he assured that the impacts and immunity of the covid vaccine will continue for several years.

It is also necessary to study in detail what happens to the patient after taking the vaccine and what their body’s immunity is.

Can coronavirus occur after vaccination?

Yes, it could be, and there are several reasons behind it.

The first reason is that no matter what type of vaccine you take, most vaccines start working two to three weeks after the first dose.

If the coronavirus accesses in the human body the day or a week after the vaccine took, there is a chance to steal risk of virus infection, and the virus can attack other people. Tang was telling to the BBC.

Again, a few weeks after taking two doses of the vaccine, someone can still be infected by corona virus.

The proof we have found that several people can influence again after taking the covid-19 corona vaccine. Though they will be less likely to get sick than those who have not been taken vaccine at all, and their levels of the virus will be much weaker, Badly told.

I guess it will be truly hard to separate the virus from one body to another body after similarly taking the vaccine.

So, there is little disagreement as to whether the corona vaccine can effectively protect a significant number of people. However, it is not yet known how much the vaccine will be able to prevent infection and spread the virus.

It’s a very different virus and it affects people differently,” said Jos Manuel Bautista, a professor in the Department of Biochemistry and Molecular Biology at the University of Madrid in Spain.

“The same thing will happen with vaccines. Some people will have strong immunity so that they will not be able to reproduce the virus. But others will be weakened, and some will reproduce and spread the infection.

Will the vaccine protect against the new strain of coronavirus?

The virus constantly changes its form. Sometimes that change is such that it acquires the ability to inhibit the vaccine. As a result, the vaccine has to be changed to prevent them.

New types of the corona that have been found in South Africa or Britain have already spread to other countries. These 2 new classes of coronaviruses also seem to have very higher infectivity.

Moderna announced last Monday that their vaccine is capable of counteracting the British and South African type of coronavirus. But in the case of South Africa, an additional vaccine needs to be developed that will boost immunity.

Pfizer / Biotech also claims that their vaccine could prevent a new form of the corona.

“So, it should be remarked that while accepted vaccines are truly effective, they do not give 100% protection against the primary coronavirus, not facing newer kinds of coronavirus,” told Badly.

. “The strength of the vaccine will broadly depend on how complicated the new corona is from the primary one,” declares Dr Tang.

In fact, governments and health departments in different countries need to keep an eye on whether new types of corona are being developed and to see if vaccines are being used.

How many doses of vaccine, how long should it be given?

Pfizer, Moderna and Oxford / AstraZeneca vaccines are given in two doses.

Initially, when the vaccine trial was going on, it was said that the second dose should be taken three to four weeks after the first dose.

But in late 2020, Britain announced that it would give the second dose three months later in the interest of most people getting the first dose.

Following this announcement, the debate on the best way to vaccinate began in the international arena. But Pfizer and other scientists say that what has been shown to be most effective in clinical trials is this: if the first dose is given today, the second dose must be given exactly 21 days later.

The World Health Organization has also expressed its views. Their advice: Apply the second dose in 21 to 28 days.

However, they also said that in exceptional circumstances it could be extended to a maximum of six weeks.

SOURCE BBC NEWS

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