So far in Bangladesh, steps like lockdown have been taken to deal with the coronavirus situation. .But Professor Nazrul Islam, one of the country's leading virologists, told the BBC 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 Bangladesh.
He is saying this at a time when various concessions are being made on the ongoing lockdown in Bangladesh. The government is even opening shops, jute and shopping malls.
When the coronavirus epidemic began around the world, there was talk of hard immunity in many countries. Although 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 develop hard immunity naturally, and the number of people who would die, would be huge.
'Sheep'
Former director of the Department of Disease Control. Bay-Nazir Ahmed said the English 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.
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