British Prime Minister Boris Johnson believes that Britain will conquer it in the next 12 weeks and that the country will "eradicate the corona virus." Even though the corona virus cases may decrease in the next three months, but still we will be far away from rooting it out. It will take a long time to finish, it is estimated that it may take a year.

However, it is also clear that the policy of shutting everything down is not possible for the larger sections for a long time. Social and economic losses are destructive. The countries of the world now want an 'exit strategy' so that the restrictions are lifted and everything is normal. But it is also true that the corona virus is not going to disappear. If you remove the restriction, the virus will return and cases will grow rapidly.

Mark Woolhouse, Professor of Infectious Disease Epidemiology at the University of Edinburgh, says, "Our biggest problem is the policy of how we can overcome it. Exit strategy is not only with the UK but with any country around the world Is not. "

Corona virus is the biggest scientific and social challenge of this time. There are only three ways to get out of this crisis.

• Vaccination
• Development of immunity in people to avoid infection
• Change our society or behavior permanently
• Each of these pathways will reduce the virus's ability to spread

• How long will it take for the vaccine to arrive?
  A vaccine gives immunity to a body due to which it does not fall ill. Developing their immunity to free around 60 per cent of the population from disease is called herd immunity so that no virus becomes an epidemic.

  This week a vaccine of the corona virus was tested in the United States. In this test, the researchers were allowed to do it directly on humans instead of using it on animals.

If all goes well, it is estimated that in 12 to 18 months, this vaccine can be made. It will be a very long time of waiting when the world is already facing so many restrictions. Professor Woolhouse says that waiting for vaccines should not be named strategy and is not a strategy.

Can natural immunity arise in humans?
The UK's strategy at this time is to allow the least spread of the virus infection so that hospitals are not overburdened as ICU beds are not empty at this time. Once its cases are reduced, some restrictions will be relaxed, but if these matters continue to grow like this then more restrictions will have to be imposed.

Britain's Chief Scientific Advisor Sir Patrick Wellens says' it is not possible to ban things altogether.Being infected with the corona virus may inadvertently increase people's immunity, but it can take years to develop.

Professor Neil Ferguson of Imperial College London says, "We are talking about suppressing the infection at one level. Hopefully, at a small level people can get infected. If it continues for more than two years, then It may be that a large part of the country has been infected which has developed its immunity. "

But the question here is, how long will this immunity last? Because other corona viruses with fever symptoms also attack those with weak immunity, and those who have previously been exposed to the corona virus are more likely to be infected by the new corona virus.

What are the other routes?
Professor Woolhouse says, "The third option is to change our behavior forever, so that the level of infection remains low. These may include some measures that have been implemented. This includes some rigorous testing and differentiation of patients from earlier The process of doing can also be included.

Says Professor Woolhouse, "We had adopted the process of identifying patients beforehand and finding people in contact with them but that did not work."

Other strategies may also include developing medications for Covid-19 infectious disease. It can be used on those who have symptoms of it to prevent the spread of infection. Or there may be a way that patients are treated in the hospital itself so that it becomes less life-threatening. Along with this, this crisis can also be faced by increasing the number of beds of ICU.

Professor Chris Witty, the UK's chief medical adviser, was asked what strategy he had to get out of the crisis.

So he said, "Clearly only a vaccine can be taken out of it and hopefully it will happen as soon as possible and science will come out with some result."