Total number of tests    Tests in the past week *

Tests per thousand peopie    Tests per thousand people

When to use which SARS-CoV-2 diagnostic test?**

Countries that pioneered testing early, such as South Korea. have reduced their testing volumes as they have obtained greater control ofthe spread ofthe virus, while others, such as Italy and the U.K., have inereased testing significantly in recent weeks

Reverse transcription polymerase chain reaction (RT-PCR) tests, done on viral genetic materiał, require laboratory environment

Capacity extension at short-notice is not possible and there are concerns over shortages of reagents required for the test

Antigen tests are a quick way to look for the virus but require a large amount of virus for accurate results

Current level of accuracy ranges from 34%-80% (WHO)

Antibody tests are used to determine if a person has developed antibodies against a pathogen, and may therefore be immune

Roche CON/ID-19 antibody test received FDA Emergency Use Authorisation and can be carried out on Roche Systems

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