COVID-19 testing - Wikipedia The US CDC's COVID-19 laboratory test kit COVID-19 testing involves analyzing samples to assess the current or past presence of SARS-CoV-2, the virus that causes COVID-19 and is responsible for the COVID-19 pandemic The two main types of tests detect either the presence of the virus or antibodies produced in response to infection [1][2] Molecular tests for viral presence through its
COVID-19 testing in the United States - Wikipedia COVID-19 testing in the United StatesCOVID-19 testing in the United States can identify whether a person is infected with SARS-CoV-2, the virus which causes COVID-19 This helps health professionals ascertain how bad the epidemic is and where it is worst [1] The accuracy of national statistics on the number of cases and deaths from the outbreak depend on knowing how many people are being
COVID-19 rapid antigen test - Wikipedia COVID-19 rapid antigen tests (RATs) have been widely used for diagnosis of COVID-19 The World Health Organization (WHO) COVID-19 Case Definition states that a person with a positive RAT (also known as an antigen rapid diagnostic test or Antigen-RDT) can be considered a "confirmed case of SARS-CoV-2 infection" in two ways [10] First, the person with a positive Antigen-RDT could meet a
Development of COVID-19 tests - Wikipedia Timeline of total number of tests in different countries [1] The COVID-19 transmission is rapid and occurs via inhalation of respiratory droplets or aerosol particles contaminated with SARS-CoV-2 The viral deposition occurs on mucous membranes of nose, mouth, or eyes via sprays and splashes; or direct contact with hands contaminated with SARS-CoV-2 either by respiratory fluids or by touching