On January 20, the science journal Nature Corona published an article on death. The article highlights the number of deaths reported by a number of internationally accepted research institutes so far. There is also a description of what methods the organizations used to get the death toll. The article also says that there is no way to get the right number. Nature says that almost 100 countries in the world do not collect accurate or reliable data on coronal deaths.

Demographers, botanists and public health experts have been trying to find out the exact cause of death in Corona since the beginning of the epidemic. Researchers and journalists are doing the same thing. They were found to follow three main methods: They analyzed satellite images of cemeteries. Some have gone from house to house collecting death information. Many have tried to figure out numbers through computer modeling.In the World Health Organization is also working to find an estimated number of deaths beyond the daily announced number.

The official number is known. It is being updated daily. The London-based Economist has given a number of global deaths. Analyzing various data on the computer, they say that 12 million to 22 million people have died in Corona. The difference between their lowest and highest number is 1 crore.

On the other hand, the Institute for Health Matrix and Evolution Modeling at the University of Washington in Seattle, USA, estimates that between 9 million and 18 million people have died in Corona. In this case, the difference between the lowest and the highest number is 9 million.

 According to the Economist, the estimated number of deaths in Japan in Corona is 550 to 26 thousand. The University of Washington estimates that the death toll in Japan is 71,000. What will people accept, what will they do with reason. At that time, the official death toll in Japan was 16 thousand.

In May last year, the University of Washington put the estimated death toll in the United States at about 900,000. That number was about 300,000 more than estimated by the country's Centers for Disease Control and Prevention (CDC). Later, however, the University of Washington moved away from their position.

In addition to these numbers obtained through instruments or computers, attempts have been made to determine the number of deaths by analyzing cemetery data in different parts of the world. There is also an attempt to find out the total number of deaths in a country in the year before the onset of the epidemic and the number of deaths in Corona by adding-subtracting-multiplying the total number of deaths in the year of the epidemic. Deaths can be calculated in countries where vital registration is done, that is, important information, including births and deaths, is kept properly.But in a country like Bangladesh, vital registration is not done properly, it is also mentioned in the article. Last year, a team of researchers based on data on deaths from health facilities and civil-registration deaths in 10 Indian states said that the death toll in Corona in India in September 2021 was six to seven times higher than the government had said. Last year, a team of researchers based on data on deaths from health facilities and civil-registration deaths in 10 Indian states said that the death toll in Corona in India in September 2021 was six to seven times higher than the government had said.

Researchers at the London School of Hygiene and Tropical Medicine have collected satellite images of 11 cemeteries in Yemen's Aden province. They found that between April and September 2020, burials in those cemeteries increased by 230 percent. However, researchers say that not everyone is buried in the cemetery.

Almost every method of searching for the number of deaths says that the death toll has increased. But the exact number cannot be said. The exact number may never be stated.