The whole world is constantly monitoring the research work being done in other countries to deal with the epidemic coronavirus. Experiments are also going on continuously for research done in other countries. One such research has come up with the Sero Survey. The results of this survey have been much better in Spain. This is the reason that America and India have also decided to take similar steps. This survey tests blood serum of people. Through this, it is known whether they have antibodies to coronavirus or not. It also helps to know whether an infected person is recovering or not. This Spanish survey remains a topic of discussion in many countries of the world. Election date of Rajya Sabha seats came out Antibodies that fight against any disease in the patient's body usually start forming after two weeks of infection which remain in the blood for several months. IgG ELISA test is not useful in detecting serious infections, but this survey will find out whether the patient had corona in the past. This survey will be able to find out how much population of the country has been exposed to this deadly virus. It will be possible to know where the increasing data of corona infected patients will stop. Scientists will also be able to get information that this infection is spreading from outside or is spreading more quickly from nearby areas. Bhupesh government ends this law The results of the nationwide Cerro survey in Spain have now been released. Accordingly, antibodies of 60,000 residents were first tested. It was found that 5% of the population of Spain was hit by Corona. Instead of 2.83 lakh, 8 times i.e. 24 lakh people had infection. After the disclosure of the report, Spain has started preparing according to 50 lakh infected people in two months. Spain has been successful in saving millions of lives from this survey. Chinese fighter jet flying close to Indian border