The Knut thinks Covid-19 is gone, lockdowns have bred Covid-20A and will breed Covid-21

I was very hopeful that Covid-19 was fading away fast in August, though certainly not in Romania. Now the word is overjoyed that there might be normality by the spring because of the Pfizer vaccine.

Were I (and many others) far too optimistic or have the epidemiologists who advise governments got things badly wrong? 

Knut Wittkowski, until 2018 Head of Biostatistics, Epidemiology, and Research Design at Rockefeller university, is sure that they got things badly wrong. he said on Linkedin on Sunday:

The original virus is not spreading anymore in most of Europe and the Northeast. It's an epidemic, not an endemic. It is gone like Influenza-B-19 and Influenza-A-20. What is beginning to spread now in Europe is not the same virus as before, it is 20A.EU1/2 with six evasive mutations to resist natural and vaccine immunity and cause COVID-20. If we don't "mitigate", it will be gone in two months, with lockdowns it will take another 9 months, enough to breed a new strain for COVID-21.