| Id |
Subject |
Object |
Predicate |
Lexical cue |
| T18 |
0-263 |
Sentence |
denotes |
The present outbreak of a coronavirus-associated acute respiratory disease called coronavirus disease 19 (COVID-19) has spread to >210 countries, which is rare among acute infectious diseases in recent years, and caused a great threat to global public health [1]. |
| T19 |
264-455 |
Sentence |
denotes |
This disease was caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), and it is the third documented spillover of an animal coronavirus to humans in only two decades [2,3]. |
| T20 |
456-596 |
Sentence |
denotes |
Since the first human coronavirus detected in the 1960s, SARS-CoV-2 is the seventh coronavirus that is known to infect humans (Fig. 1 ) [4]. |
| T21 |
597-723 |
Sentence |
denotes |
There are four types of coronaviruses named as α, β, γ and δ, which only α- and β-type contain human pathogenic strains [1,4]. |
| T22 |
724-894 |
Sentence |
denotes |
SARS-CoV-2, including severe acute respiratory syndrome coronavirus (SARS-CoV) and Middle East respiratory syndrome coronavirus (MERS-CoV), are all β-coronal viruses [3]. |
| T23 |
895-977 |
Sentence |
denotes |
Fig. 1 The virus types and symptoms of 7 important pathogenic human coronaviruses. |
