# List of countries implementing pool testing strategy against COVID-19

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 | References |
| Switzerland | | 18/12/2021 | >6,000,000 | 10 | Saliva | |
| United States Washington | University of Washington | 7/23/2020 | >100,000 | 4 | Nasopharyngeal swab | |
| United States California | Stanford Medical Center | 06/03/2020 | 2,888 (3 positives) | 10 | Nasopharyngeal swab | |
| United States Nebraska | University of Nebraska | 20/04/2020 | 1,700/week | 5 | Nasopharyngeal swab | |
| United States Kansas | Clinical Reference Laboratory, Lenexa | 31/08/2020 | 6,000/week | 5 | Saliva | |
| Spain | Fundación Biomédica Galicia Sur, CHUVI | 10/08/2020 | 100,000/month | 20 | Saliva | |
| Israel | Rambam Clinical Microbiology Laboratory | 18/03/2020 | N.A. | up to 64 | Nasopharyngeal swab | [7][8] [9] |
| Germany | Saarland University Medical Center | 29/04/2020 | 22,000 | 30 | Nasopharyngeal swab | |
| China | Wuhan Centre for Disease Control | 08/06/2020 | >1M | 5-10 | Nasal/Oral swabs | [12] [13] |
| China | Qingdao | 08/06/2020 | 7M | To confirm | To confirm | |
| China | Kashgar City | 26/11/2020 | 4.5M | To confirm | To confirm | |
| China | Qingdao City | 15/10/2020 | 11M | 10 | To confirm | |
| Portugal | Algarve Biomedical Centre | 24/04/2020 | 17,000 | 10 | Nasopharyngeal swab | [17] [18] |
| Australia | Victorian Infectious Diseases Reference Laboratory, Melbourne | 25/08/2020 | 10,312 | 2-8 | Nasopharyngeal swab | |
| Singapore | Ministry of Health | 02/2020 | 9,000 | 10 | N.A. | |
| Ghana | Noguchi Memorial Institute for Medical Research | 04/2020 | 30,000 | 10 | Mixed origin | [21] [22] |
| Philippines | Makati Health Department | 15/08/2020 | 10,000 | Unknown | Unknown | |
| Vietnam | Danang Center for Disease Control | 05/08/2020 | >10,000 | Unknown | Unknown | |
| Ecuador | Universidad de Las Americas | 05/08/2020 | 1,500 | 3 | Nasopharyngeal swabs | |
| South Korea | Jeonbuk National University Medical School and Hospital, Jeonju | 14/07/20 | | | | [26] [27] [28] [29] |
| India Uttar Pradesh | King George's Medical University, Lucknow | | | | | [30] [31] |
| India West Bengal | | | | | | |
| India Punjab | | | | | | |
| India Chhattisgarh | | | | | | |
| India Maharashtra | | | | | | |
| Malaysia | International Medical University, Kuala Lumpur | 27/04/2020 | 2,732 (52 positives) | 10 | Nasopharyngeal swab | |
| Uruguay | Pan American Health Organisation (PAHO). | 22/09/2020 | | 10 | | |
| Morocco | Casablanca | 09/06/2020 | | 5-10 | | |
| Brazil | 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 |
| Switzerland | Université de Genève | 2021 | | | saliva | |
| UK | University of Nottingham | 25/09/2020 | | | self-collected saliva | |
| UK | Cambridge University | 25/09/2020 | expected: 16 000/week | | self-collected nasopharyngeal | |
| Belgium | Université de Liège | 26/06/2020 | expected: 30,000/week | 8 | self-collected saliva | [43] [44] |
| United States | College of Mount Saint Vincent | 09/2020 | | 5 to 24 | self-collected saliva | |
| United States | Duke University | 08/2020 | | 5 to 10 | self-collected nasal | |
| United States | Michigan State University | 08/2020 | 14,000/week | 8 or 10 | self-collected saliva | |
| United States | Syracuse University | 07/2020 | 20,000/week | 25 | self-collected saliva | |
| United States | University of South Florida | 08/2020 | ? | 5 to 10 | ? | |
| United States | Colorado School | 03/11/2020 | (expected: 3,000/week) | 8 | self-collected saliva | |
| United States | 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 |
| France | Hôpital Bichat | 03/06/2020 | 448 | 16 | nasopharyngeal swab |
| Spain | Hospital Clínico Universitario, Institute for Research, Valencia | 04/05/2020 | N.A. | 5-10 | nasopharyngeal swab |
| Spain | Universidade de Santiago, Santiago | 02/06/2020 | N.A. | 5-20 | nasopharyngeal swab |
| Chile | Universidad Austral de Chile | 06/2020 | 610 | 20 | nasopharyngeal swab |
| Kenya | Pwani University & Oxford | 13/08/2020 0 | 1500 | 6 | nasopharyngeal swab |
| Thailand | Chulalongkorn University, Bangkok | 13/08/2020 | N.A. | 10 | nasopharyngeal swab |
| Rwanda | University of Rwanda, Kigali | 30/04/2020 | N.A. | 20-100 | oropharyngeal swab |
| Italy | Sant'Andrea Hospital and Sapienza University, Rome | 03/08/2020 | >2035 | 5 | naso-oropharyngeal swab |
| Thailand | Mahidol University, Bangkok | 25/08/2020 | N.A. | 5-10 | saliva |