So far in many countries, steps like 'lockdown' have been taken to deal with the coronavirus situation. But Professor Dr. Alex George, one of the world's leading virologists, told the me that the pattern or graph of the infection showed that there was no choice but to wait until "hard immunity" arrived. Professor Islam thinks that it is not possible to impose a strict lockdown in Many countries.
He is saying this at a time when various concessions are being made on the ongoing lockdown in many countries. Many governments are even opening shops-jute-shopping malls.
When the coronavirus epidemic began around the world, there was talk of hard immunity in many countries. However, in the end no country has walked that path but the path of lockdown.
This is because before the invention of the vaccine, the number of people who would be infected to build up hard immunity naturally, and the number of people who would die, would be huge.
'Sheep'
He says, the word hard comes from a flock of sheep. And immunity is immunity.
Sheep were vaccinated to prevent infection, he said. If 80 out of 100 sheep had been vaccinated, the infection would not have spread to those flocks. Although not every one in a hundred was vaccinated, a kind of protection zone worked for them. This is hard immunity.
In the case of humans, when vaccines or vaccines are given in a certain proportion within a certain population, that community is no longer infected. This is called hard immunity.
The Oxford University Vaccine Knowledge Project website has detailed information on what hard immunity is and who it protects. It says that when most people in an area are vaccinated against an infectious disease, there is no risk of the disease spreading in that area. Because there are no more infected people in that area.
For example, if measles occurs in someone in a community, and most people are vaccinated, the disease cannot spread to anyone else. This is hard immunity or community immunity. Because of this, newborns, the elderly and sick people who cannot be vaccinated are free of the disease.
The way hard immunity works
Hard immunity will only work when most people in a group are given antidotes. For example, in the case of measles, if only 19 out of 20 people can be vaccinated, then hard immunity will be developed in certain communities.
In this regard, Mr. Ahmed said the number of hard immunity for various diseases has been fixed. This means that the number of people in a community who need to be vaccinated for a disease is determined by the number of people who will not be infected. For example, in order to develop a strong immunity to diseases like polio, the number of people who need to be vaccinated has been determined.
However, if immunity is not given, hard immunity does not work there. Also, if most members of a community are not vaccinated, it will not work. The reverse disease will spread very soon. This is what happened in Wales in 2013. There was an outbreak of measles.
Hard immunity to coronavirus:
No antidote or vaccine for coronavirus has yet been discovered. So how will hard immunity work to deal with it?
In this case, it is said that those who are once infected with the virus, the immune system against the virus is strong.
In this way, if more people become infected with the virus, then at one time a large number of people develop immunity to the virus. This creates a protective zone within a particular community and stops the spread of the disease.
Dr. Alex says hard immunity works hard in the case of coronaviruses. Because, he thinks, more than 90 percent of people need to be infected with the virus if they are to develop strong immunity against the coronavirus.
Earlier, countries like the United States and Sweden had considered taking measures on hard immunity. From the beginning, Sweden did not seem to adhere to such a social distance.
It is not yet a recognized method of preventing coronavirus. But many think it could be a way.
According to the World Health Organization, a person infected with coronavirus can infect 2.5 people.
At least 90 percent of people need to be infected with coronavirus to have hard immunity. That means 9 out of every 10 people should be infected.
And because of this the number of deaths will increase at a deadly rate. We have to pay the price.
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