What is the effect of interferon in the treatment of new crowns?

News in April of this year showed that Anke Bio’s human interferon spray clinical trial has been accepted.

Effectiveness and safety of interferon medication

Clinically, interferon is mainly used to combat hepatitis B virus, and its main treatment is injection, which is usually injected every other day

So is interferon completely free of side effects when used? Actually it is not

Here I would like to say a simple example.

There are mild and severe cases of new crown infection, caused by early interferon deficiency

Why are people also infected with the new coronavirus, some are asymptomatic, and some are severely ill or died? Some studies have shown that the cause of the severe death was the strong immune response in the late outbreak, but where did the human body’s early immune response against the virus go?

To put it simply, under normal circumstances, after the human body is infected by a virus, the human body will initiate an immune response to protect the body's cellular immune cells, and at the same time it will release inflammatory factors and cytokines to fight against the invasion of the virus

Only one hypothesis related to interferon is mentioned here

In another part of the patients, because the early new coronavirus suppressed the release of interferon, when the virus invaded the lungs in large quantities, the human body would initiate a rapid immune response to fight against it

So, is interferon useful in the treatment of COVID-19? In fact, interferon has been proposed as an important therapeutic drug in China's new crown treatment expert guidelines