If not otherwise stated, the virological status of sample pools is evaluated through PCR tests.

Screening strategies

General population

+ Large-scale screening strategies Country Institution Date Total sampled Number in pools Specimen Type References18/12/2021>6,000,00010Saliva University of Washington7/23/2020>100,0004Nasopharyngeal swab Stanford Medical Center 06/03/2020 2,888 (3 positives) 10 Nasopharyngeal swab University of Nebraska 20/04/2020 1,700/week 5 Nasopharyngeal swab Clinical Reference Laboratory, Lenexa 31/08/2020 6,000/week 5 Saliva Fundación Biomédica Galicia Sur, CHUVI 10/08/2020 100,000/month 20 Saliva Rambam Clinical Microbiology Laboratory 18/03/2020 N.A. up to 64 Nasopharyngeal swab Saarland University Medical Center 29/04/2020 22,000 30 Nasopharyngeal swab Wuhan Centre for Disease Control 08/06/2020 >1M 5-10 Nasal/Oral swabs Qingdao 08/06/2020 7M To confirm To confirm Kashgar City 26/11/2020 4.5M To confirm To confirm Qingdao City 15/10/2020 11M 10 To confirm Algarve Biomedical Centre 24/04/2020 17,000 10 Nasopharyngeal swab Victorian Infectious Diseases Reference Laboratory, Melbourne 25/08/2020 10,312 2-8 Nasopharyngeal swab Ministry of Health 02/2020 9,000 10 N.A. Noguchi Memorial Institute for Medical Research 04/2020 30,000 10 Mixed origin Makati Health Department 15/08/2020 10,000 Unknown Unknown Danang Center for Disease Control 05/08/2020 >10,000 Unknown Unknown Universidad de Las Americas 05/08/2020 1,500 3 Nasopharyngeal swabs Jeonbuk National University Medical School and Hospital, Jeonju 14/07/20 Uttar Pradesh King George's Medical University, Lucknow West Bengal Punjab Chhattisgarh Maharashtra International Medical University, Kuala Lumpur 27/04/2020 2,732 (52 positives) 10 Nasopharyngeal swab Pan American Health Organisation (PAHO). 22/09/2020 10 Casablanca 09/06/2020 5-10 Florianópolis 05/05/2020 19,535 (246 positives) 16 Nasopharyngeal swab

Campus screening strategies

+ Screening strategies in University Campus Country Campus Date Total sampled Number in pools Specimen Type References Université de Genève 2021 saliva University of Nottingham 25/09/2020 self-collected saliva Cambridge University 25/09/2020 expected: 16 000/week self-collected nasopharyngeal Université de Liège 26/06/2020 expected: 30,000/week 8 self-collected saliva College of Mount Saint Vincent 09/2020 5 to 24 self-collected saliva Duke University 08/2020 5 to 10 self-collected nasal Michigan State University 08/2020 14,000/week 8 or 10 self-collected saliva Syracuse University 07/2020 20,000/week 25 self-collected saliva University of South Florida 08/2020 ? 5 to 10 ? Colorado School 03/11/2020 (expected: 3,000/week) 8 self-collected saliva Shenandoah University 15/10/2020 2,000 self-collected saliva

SUNY campuses are implementing a pool testing strategy based on saliva samples, including Cornell, SUNY Fredonia or SUNY Oneonta.

The University of Tennessee is also implementing a saliva pool testing strategy.

Researchers from Yale University, Georgia Augusta University, the University of Illinois, are also considering or implementing pool testing strategies.

Small-scale screening or experimental protocols

+ Smaller scale screening or experimental protocols Country Institution Date Total sampled Number in pools Specimen Type References Hôpital Bichat 03/06/2020 448 16 nasopharyngeal swab Hospital Clínico Universitario, Institute for Research, Valencia 04/05/2020 N.A. 5-10 nasopharyngeal swab Universidade de Santiago, Santiago 02/06/2020 N.A. 5-20 nasopharyngeal swab Universidad Austral de Chile 06/2020 610 20 nasopharyngeal swab Pwani University & Oxford 13/08/2020 0 1500 6 nasopharyngeal swab Chulalongkorn University, Bangkok 13/08/2020 N.A. 10 nasopharyngeal swab University of Rwanda, Kigali 30/04/2020 N.A. 20-100 oropharyngeal swab Sant'Andrea Hospital and Sapienza University, Rome 03/08/2020 >2035 5 naso-oropharyngeal swab Mahidol University, Bangkok 25/08/2020 N.A. 5-10 saliva

References

See also Group testing COVID-19 testing