pendennis wrote:
you should already know that viruses do not kill directly.
Viruses kill by infecting and killing host cells, infecting and damaging other host cells, triggering an immune response which might eradicate the virus or might overshoot with detrimental effects to the host (see "cytokine storm"), and by lowering host's resistance to secondary infection. The combination of which may result in organ malfunction, organ failure, and death of the host.
When a virus causes manifestations that lead to death, we say that the cause of death was the virus. Without the viral infection, the host would not have died. The manifestations caused by the virus, which in the case of Covid-19 may include heart failure, heart attack, pneumonia, respiratory failure, cytokine storm, kidney failure, stroke, blood clot, etc., are all listed as secondary causes of death.
In the same way that a person sustaining a gunshot wound to the chest, who bleeds out and dies, has the cause of death listed as gunshot wound, and blood loss listed as a secondary factor. Here is a good explanation:
"The cause of death is the disease or injury that produces the physiological disruption inside the body resulting in death, for example, a gunshot wound to the chest. The mechanism of death is the physiological derangement that results in the death."
Saying that a virus does not "directly" cause death, is splitting hairs between the cause of death and the mechanism of death. In the end, the culprit is the virus, without which neither illness nor death would have occurred.