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Coronavirus SARS-CoV-2 "The little Coronavirus"

The effect of friday the 13th

On friday on March 13th, 2020 an extraordinary rise of the daily infected cases happened in the countries of western Europe. It looks like the coronavirus was preparing for the spread one day before which highlighted the spread on friday 13th much more. On the sum of daily cases for the western europe it looks like this:

On the spread speed graph it looks like this:

The hop in the spread is very significant in these countreis: Belgium, Finland, Iceland, Italy, Germany, Netherlands, Norway, Portugese, Austria, Spain, Sweden, Switzerland. These countries are part of the graphs above. In the countries of eastern Europe, no hop is visible, as it is shown in the next graph:

This graph shows the spread speed for the sum of countries: Czech republic, Hungary, Poland, Slovakia, Slovenia.

Only speculations can be made, what is the root cause of the effect of friday 13th. I believe, that this hop is associated with the celebration of the International Woman's day happening 5 days before. In the western countries this day is much more celebrated than in the eastern countries. Mass events were ideal for the spread of the virus.

SARS-CoV-2
Cached sources: Dynamic sources: testing page