Abstract
is very variable since there are countries that differ up to two orders of magnitude.
 Objective: To analyze the positive/deaths ratio up to May 24, 2021, in the European countries on the light of asymptomatic subjects and determine if the presence of non-mortal drifts can justify the present deaths decay.
 Methods: The data of the European countries were retrieved from the WHO coronavirus dashboard. Italy was taken as example to calculate the differences among regions in the same country, and the relative data were taken from the Official Bulletin. Statistical analysis was based on the ODDS ratio.
 Results: True asymptomatic subjects are difficult to be calculated and the differences among the deaths ratio can be due to the presence of non-mortal drifts.
 Conclusions: The non-mortal drift should be considered as one of the reasons of the present death decay, and vaccinations can accelerate this process.
Highlights
The Coronavirus belongs to the Riboviria realm, Orthornavirae kingdom, Pisuviricota phylum, Pisoniviricetes class, Nidovirales order, Cornidovirineae suborder, Coronaviridae family, Orthocoronavirinae subfamily
The first coronavirus was identified in the mid1960s and was characterized by a positive strand of RNA, with a helically symmetrical nucleocapsid
Coronaviruses phylogenetically belong to four distinct taxonomic groups labelled alpha, beta, gamma, and delta (α, β, γ and δ), where those that affect humans are types alpha and beta
Summary
The Coronavirus belongs to the Riboviria realm, Orthornavirae kingdom, Pisuviricota phylum, Pisoniviricetes class, Nidovirales order, Cornidovirineae suborder, Coronaviridae family, Orthocoronavirinae subfamily. The first coronavirus was identified in the mid1960s and was characterized by a positive strand of RNA, with a helically symmetrical nucleocapsid. Coronaviruses phylogenetically belong to four distinct taxonomic groups labelled alpha, beta, gamma, and delta (α, β, γ and δ), where those that affect humans are types alpha and beta. Alpha causes the common cold and beta, respiratory diseases [1]. The four groups are found in many species from mammals (such as cats, dogs, bovines, bats, and camels) to birds, and may cause respiratory and enteric diseases. The ratio positive cases/deaths due to COVID-19 in the World is very variable since there are countries that differ up to two orders of magnitude
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