It is now clear that the majority of those affected (around 80 percent) only have mild cold symptoms - or none at all. In 20 percent, however, the disease is severe, ten percent have a critical and particularly life-threatening course. The special risk group are older patients and people with previous illnesses.
On average, Covid-19 infections are more common in men, and the disease is also more serious and fatal here.
For example, a large proportion of the deceased already had a compromised immune system or were very old - or both. That is, the older the patient, the greater the risk. But young people could also die from certain viral diseases as a result of this viral infection.
Mortality rate appears to be lower than previous corona epidemics
If one compares the mortality rate (i.e. the number of known infected people who die from the disease) of the new coronavirus with that of the previous corona epidemics, it currently appears to be lower - based on the confirmed cases, it would be around 3, 8 percent (as of March 16, 2020).
In the Hubei region, mortality is six times higher than in the other Chinese provinces.
However, since the number of undetected infections is probably much higher, the mortality rate is likely to be lower. Mathematicians and epidemiologists certainly expect a 10-fold higher number of unreported cases. However, only increased tests can provide information. The Robert Koch Institute names a possible factor that fluctuates between 4.5 and 11.1.
Virologist Christian Drosten ultimately assumes a realistic lethality between 0.3 and 0.7 percent. Calculated across China, the first data also indicate a mortality rate of 0.8 percent. However, there is no final data yet. For comparison: about 10 to 11 percent of the sick died of a SARS infection.
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