The rate of death and death from nCoV in Asia is much lower than in the West, prompting scientists to discover the secret of Covid-19.

China, where Covid-19 started in December 2019, reported more than 4,600 deaths, with a death rate of 3 per million.

The obvious disparity between Asia and the West immediately caught the attention of scientists.

One of the reasons for the higher death rates in the US and Western Europe is the hesitation in the early epidemic.

Taiwan is a testament to this.

South Korea also immediately launched a system of testing, monitoring and isolation of infected people.

Hot and humid weather may also be a boon to countries such as Cambodia, Vietnam or Singapore in the battle against Covid-19.

However, not all countries in Asia have this type of weather.

Japanese people believe that everyday habits such as frequently washing hands, wearing masks and culture bowing instead of shaking hands, kissing are "key" to slow down the speed of spreading the epidemic.

A study by the University of Cambridge, UK, published in April, showed that the nCoV was mutated when it spread to Europe, noting that the original strain was "adaptable to the environment and immunity of the majority of the population."

Peter Forster, a geneticist and lead researcher, said how "clinical data" on how the virus strains affect different population groups remains "very limited".

A team of scientists at the Los Alamos National Laboratory also thinks a more contagious virus has hit Europe and the US, but other experts say the severity of the strain is unclear.

"There is a possibility that a person who has this mutant virus will go to a rock or nightclub festival and infect it to others," said Jeremy Luban, a virologist at the University of Massachusetts School of Medicine.

Tasuku Honjo, a Japanese scientist and immunologist who won a Nobel Prize, points out another factor is genetic structure.

The team of scientists at Chiba University also emphasized that genetic factors can influence the body's response to viruses and deserve further research, even if there is no evidence for this idea at all.

Experts say that different immune responses may also be factors that affect the rate of infection and death from nCoV.

The scientist noted that corona virus strains have been present in East Asia for centuries.

Other studies have shown that high rates of tuberculosis (BCG) vaccination may have helped Asians to cope with nCoV better, because this vaccine can cause a cellular-level immune boosting response.

Megan Murray, an epidemiologist at Harvard Medical School, said that intestinal bacteria also play a major role in the body's immune response.

Obesity is one of the underlying medical conditions that increase the risk of death from nCoV.

However, the scientists also noted that these are just statements based on current data on Covid-19 and that it is too early to draw any conclusions regarding the impact of the pandemic.

Experts warn that all countries in the world still need to raise their awareness about nCoV.