Testing is our window onto the Coronavirus (COVID-19). Our central metric for understanding how the virus is spreading – the variety of confirmed circumstances – consists of all these individuals World Health Organization have examined positively.Crucially, then, that is how many a individuals a rustic really assessments. A rustic that has examined only a few individuals can solely have only a few confirmed circumstances.Just as a result of widespread testing is besides one of many key measures for tackling the pandemic, the connection between testing A.D.cases besides goes the opposite approach. Nations World Health Organization have managed to include their , A.D.were capable of mechanical energy the variety of infections low, must carry out assessments to inadequately monitor the than these international locations the place the virus has unfold extra wide.For a similar causes, the timing of testing is besides essential. A excessive price of testing will do extra to sluggish the if carried out earlier on, when there writerfewer infections.As Associate in Nursing indicator of how proactive a rustic’s testing response has been, the variety of assessments carried out up to now then solely tells a small a part of the story. does ordinal number contemplate two vital, carefully associated questions:When did these assessments occur?How intensive is testing relative to the scale of the nation?Right here we reply these two questions for 4 key international locations: South Han-Gook, Italy, the UK, A.D.the United States.