Testing strategies vary by country and over time,^[255] with some countries testing very widely,^[8] while others have at times focused narrowly on only testing the seriously ill.^[6] The country that tests only people showing symptoms will have a higher figure for "Confirmed"/"tested" than the country that also tests others.^[256] If two countries are alike in every respect, including which people they test, the one that tests more people will have a higher "Confirmed / population". Studies have also found that countries that test more, relative to the number of deaths, have lower estimated case fatality rates^[9] and younger age distributions of cases.^[11]

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COVID-19 testing statistics by country
Country or region	Date^{[lower-alpha 1]}	Tested	Units^{[lower-alpha 2]}	Confirmed (cases)	Confirmed / tested, %	Tested / population, %	Confirmed / population, %	Ref.
Afghanistan	17 Dec 2020	154,767	samples	49,621	32.1	0.40	0.13	^[257]
Albania	18 Feb 2021	428,654	samples	96,838	22.6	15.0	3.4	^[258]
Algeria	2 Nov 2020	230,553	samples	58,574	25.4	0.53	0.13	^[259]^[260]
Andorra	23 Feb 2022	300,307	samples	37,958	12.6	387	49.0	^[261]
Angola	2 Feb 2021	399,228	samples	20,981	5.3	1.3	0.067	^[262]
Antigua and Barbuda	6 Mar 2021	15,268	samples	832	5.4	15.9	0.86	^[263]
Argentina	16 Apr 2022	35,716,069	samples	9,060,495	25.4	78.3	20.0	^[264]
Armenia	29 May 2022	3,099,602	samples	422,963	13.6	105	14.3	^[265]
Australia	9 Sep 2022	78,548,492	samples	10,112,229	12.9	313	40.3	^[266]
Austria	1 Feb 2023	205,817,752	samples	5,789,991	2.8	2,312	65.0	^[267]
Azerbaijan	11 May 2022	6,838,458	samples	792,638	11.6	69.1	8.0	^[268]
Bahamas	28 Nov 2022	259,366	samples	37,483	14.5	67.3	9.7	^[269]
Bahrain	3 Dec 2022	10,578,766	samples	696,614	6.6	674	44.4	^[270]
Bangladesh	24 Jul 2021	7,417,714	samples	1,151,644	15.5	4.5	0.70	^[271]
Barbados	14 Oct 2022	770,100	samples	103,014	13.4	268	35.9	^[272]
Belarus	9 May 2022	13,217,569	samples	982,809	7.4	139	10.4	^[273]
Belgium	24 Jan 2023	36,548,544	samples	4,691,499	12.8	317	40.7	^[274]
Belize	8 Jun 2022	572,900	samples	60,694	10.6	140	14.9	^[275]^[276]
Benin	4 May 2021	595,112	samples	7,884	1.3	5.1	0.067	^[277]
Bhutan	28 Feb 2022	1,736,168	samples	12,702	0.73	234	1.71	^[278]
Bolivia	5 Jun 2022	4,358,669	cases	910,228	20.9	38.1	8.0	^[279]
Bosnia and Herzegovina	27 Sep 2022	1,872,934	samples	399,887	21.4	54.7	11.7	^[280]
Botswana	11 Jan 2022	2,026,898		232,432	11.5	89.9	10.3	^[281]^[282]
Brazil	19 Feb 2021	23,561,497	samples	10,081,676	42.8	11.2	4.8	^[283]^[284]
Brunei	2 Aug 2021	153,804	samples	338	0.22	33.5	0.074	^[285]
Bulgaria	2 Feb 2023	10,993,239	samples	1,295,524	11.8	158	18.6	^[286]
Burkina Faso	4 Mar 2021	158,777	samples	12,123	7.6	0.76	0.058	^[259]^[287]
Burundi	5 Jan 2021	90,019		884	0.98	0.76	0.0074	^[288]
Cambodia	1 Aug 2021	1,812,706		77,914	4.3	11.2	0.48	^[289]
Cameroon	18 Feb 2021	942,685	samples	32,681	3.5	3.6	0.12	^[259]
Canada	26 Nov 2022	66,343,123	samples	4,423,053	6.7	175	11.7	^[290]
Chad	2 Mar 2021	99,027	samples	4,020	4.1	0.72	0.029	^[259]^[291]
Chile	1 Feb 2023	48,154,268	samples	5,123,007	10.6	252	26.9	^[292]
China^{[lower-alpha 3]}	31 Jul 2020	160,000,000	cases	87,655	0.055	11.1	0.0061	^[293]^[294]
Colombia	24 Nov 2022	36,875,818	samples	6,314,769	17.1	76.4	13.1	^[295]^[296]
Costa Rica	2 Nov 2021	2,575,363	samples	561,054	21.8	51.5	11.2	^[297]
Croatia	2 Feb 2023	5,481,285	cases	1,267,798	23.1	134	31.1	^[298]
Cuba	2 Feb 2023	14,301,394	samples	1,112,470	7.8	126	9.8	^[299]^[300]
Cyprus^{[lower-alpha 4]}	29 Jan 2023	27,820,163	samples	644,160	2.3	3,223	74.4	^[301]
Czechia	1 Feb 2023	22,544,928	samples	4,590,529	20.4	211	42.9	^[302]
Denmark^{[lower-alpha 5]}	31 Jan 2023	67,682,707	samples	3,399,947	5.0	1,162	58.4	^[303]^[304]
Djibouti	28 Apr 2022	305,941		15,631	5.1	33.2	1.7	^[305]
Dominica	20 Jun 2022	209,803	cases	14,821	7.1	293	20.7	^[306]
Dominican Republic	22 Jul 2022	3,574,665	samples	626,030	17.5	32.9	5.8	^[307]
DR Congo	28 Feb 2021	124,838		25,961	20.8	0.14	0.029	^[259]^[308]
Ecuador	23 Jul 2021	1,627,189	samples	480,720	29.5	9.5	2.8	^[309]
Egypt	23 Jul 2021	3,137,519	samples	283,947	9.1	3.1	0.28	^[259]^[310]
El Salvador	18 Mar 2022	1,847,861	samples	161,052	8.7	28.5	2.5	^[311]
Equatorial Guinea	30 Jan 2023	403,773		17,113	4.2	30.8	1.3	^[312]
Estonia	31 Jan 2023	3,637,908	samples	613,954	16.9	274	46.2	^[313]
Eswatini	8 Dec 2021	415,110		49,253	11.9	36.5	4.3	^[314]
Ethiopia	24 Jun 2021	2,981,185	samples	278,446	9.3	2.6	0.24	^[315]
Faroe Islands	27 Feb 2022	774,000	samples	34,237	4.4	1,493	65.7	^[316]
Fiji	2 Jan 2023	667,953	samples	68,848	10.3	74.5	7.7	^[317]
Finland	14 Jan 2022	9,042,453	samples	371,135	4.1	163	6.7	^[318]
France^{[lower-alpha 6]}^{[lower-alpha 7]}	15 May 2022	272,417,258	samples	29,183,646	10.7	417	44.7	^[319]
Gabon	23 Jul 2021	958,807	samples	25,325	2.6	3.1	0.082	^[320]
Gambia	15 Feb 2021	43,217	samples	4,469	10.3	2.0	0.21	^[321]
Georgia^{[lower-alpha 8]}	3 Nov 2021	4,888,787	samples	732,965	15.0	132	19.7	^[322]
Germany	7 Jul 2021	65,247,345	samples	3,733,519	5.7	77.8	4.5	^[323]^[324]
Ghana	3 Jul 2021	1,305,749	samples	96,708	7.4	4.2	0.31	^[325]
Greece	18 Dec 2022	101,576,831	samples	5,548,487	5.5	943	51.5	^[326]
Greenland	30 Jan 2022	164,573	samples	10,662	6.5	293	19.0	^[327]
Grenada	11 May 2021	28,684		161	0.56	25.7	0.14	^[328]
Guatemala	6 Jan 2023	6,800,560	samples	1,230,098	18.1	39.4	7.1	^[329]
Guinea	21 Jul 2021	494,898	samples	24,878	5.0	3.8	0.19	^[259]^[330]
Guinea-Bissau	7 Jul 2022	145,231		8,400	5.8	7.7	0.45	^[331]
Guyana	15 Jun 2022	648,569	cases	66,129	10.2	82.5	8.4	^[332]
Haiti	26 Nov 2022	223,475	cases	33,874	15.2	2.0	0.30	^[333]
Honduras	26 Nov 2021	1,133,782	samples	377,859	33.3	11.8	3.9	^[334]
Hungary	10 May 2022	11,394,556	samples	1,909,948	16.8	118	19.8	^[335]
Iceland	9 Aug 2022	1,988,652	samples	203,162	10.2	546	55.8	^[336]
India	8 Jul 2022	866,177,937	samples	43,585,554	5.0	63	31.7	^[337]^[338]
Indonesia	3 Jul 2023	76,062,770	cases	6,812,127	9.0	28.2	2.5
Iran	31 May 2022	52,269,202	samples	7,232,268	13.8	62.8	8.7	^[339]
Iraq	3 Aug 2022	19,090,652	samples	2,448,484	12.8	47.5	6.1	^[340]
Ireland	31 Jan 2023	12,990,476	samples	1,700,817	13.1	264	34.6	^[341]
Israel	17 Jan 2022	41,373,364	samples	1,792,137	4.3	451	19.5	^[342]
Italy	16 Mar 2023	269,127,054	samples	25,651,205	9.5	446	42.5	^[343]
Ivory Coast	3 Mar 2021	429,177	samples	33,285	7.8	1.6	0.13	^[344]
Jamaica	30 Sep 2022	1,184,973	samples	151,931	12.8	43.5	5.6	^[345]
Japan	1 Mar 2021	8,487,288		432,773	5.1	6.7	0.34	^[346]
Jordan	6 Jun 2021	7,407,053	samples	739,847	10.0	69.5	6.9	^[347]
Kazakhstan	28 May 2021	11,575,012	samples	385,144	3.3	62.1	2.1	^[348]
Kenya	5 Mar 2021	1,322,806	samples	107,729	8.1	2.8	0.23	^[349]
Kosovo	31 May 2021	611,357	cases	107,410	17.6	33.8	5.9	^[350]
Kuwait	9 Mar 2022	7,754,247	samples	624,573	8.1	181	14.6	^[351]
Kyrgyzstan	10 Feb 2021	695,415	samples	85,253	12.3	10.7	1.3	^[352]
Laos	1 Mar 2021	114,030	cases	45	0.039	1.6	0.00063	^[353]
Latvia	5 Sep 2021	3,630,095	samples	144,518	4.0	189	7.5	^[354]
Lebanon	14 Jun 2021	4,599,186	samples	542,649	11.8	67.4	8.0	^[355]
Lesotho	30 Mar 2022	431,221		32,910	7.6	21.5	1.6	^[356]
Liberia	17 Jul 2021	128,246		5,396	4.2	2.5	0.11	^[357]
Libya	14 Apr 2022	2,578,215	samples	501,862	19.5	37.6	7.3	^[259]^[358]
Lithuania	31 Jan 2023	9,046,584	samples	1,170,108	12.9	324	41.9	^[359]^[360]
Luxembourg^{[lower-alpha 9]}	12 May 2022	4,248,188	samples	244,182	5.7	679	39.0	^[361]
Madagascar	19 Feb 2021	119,608	cases	19,831	16.6	0.46	0.076	^[362]
Malawi	29 Nov 2022	624,784	samples	88,086	14.1	3.3	0.46	^[363]
Malaysia	7 Sep 2021	23,705,425	cases	1,880,734	7.9	72.3	5.7	^[364]
Maldives	13 Mar 2022	2,216,560	samples	174,658	7.9	398	31.3	^[365]^[366]
Mali	7 Jul 2021	322,504	samples	14,449	4.5	1.6	0.071	^[259]^[367]
Malta	8 Sep 2021	1,211,456	samples	36,606	3.0	245	7.4	^[368]
Mauritania	16 Apr 2021	268,093		18,103	6.8	6.1	0.41	^[369]
Mauritius	22 Nov 2020	289,552	samples	494	0.17	22.9	0.039	^[370]
Mexico	15 Oct 2021	10,503,678	cases	3,749,860	35.7	8.2	2.9	^[371]
Moldova^{[lower-alpha 10]}	20 Apr 2022	3,213,594	samples	516,864	16.1	122	19.6	^[372]
Mongolia	10 Jul 2021	3,354,200	cases	136,053	4.1	100	4.1	^[373]
Montenegro	10 May 2021	394,388	samples	98,449	25.0	62.5	15.6	^[374]^[375]
Morocco	6 Jan 2023	14,217,563	cases	1,272,299	8.9	38.5	3.4	^[376]
Mozambique	22 Jul 2021	688,570	samples	105,866	15.4	2.2	0.34	^[377]
Myanmar	16 Sep 2021	4,047,680	samples	440,741	10.9	7.4	0.81	^[378]
Namibia	4 Jul 2022	1,062,663	samples	166,229	15.6	38.7	6.1	^[379]
Nepal	26 Jul 2022	5,804,358	samples	984,475	17.0	20.7	3.5	^[380]
Netherlands	6 Jul 2021	14,526,293	cases	1,692,834	11.7	83.4	9.7	^[381]
New Caledonia	3 Sep 2021	41,962	samples	136	0.32	15.7	0.050	^[382]
New Zealand	29 Jan 2023	7,757,935	samples	2,136,662	27.5	156	42.9	^[383]^[384]
Niger	22 Feb 2021	79,321	cases	4,740	6.0	0.35	0.021	^[385]
Nigeria	28 Feb 2021	1,544,008	samples	155,657	10.1	0.75	0.076	^[386]
North Korea	25 Nov 2020	16,914	cases	0	0	0.066	0	^[387]
North Macedonia	1 Jul 2021	881,870	samples	155,689	17.7	42.5	7.5	^[388]^[389]
Northern Cyprus^{[lower-alpha 11]}	12 Jul 2022	7,096,998	samples	103,034	1.5	2,177	31.6	^[390]
Norway	20 Jan 2022	9,811,888	samples	554,778	5.7	183	10.3	^[391]
Oman	28 Oct 2020	509,959	samples	114,434	22.4	11.0	2.5	^[392]
Pakistan	5 Mar 2021	9,173,593	samples	588,728	6.4	4.2	0.27	^[393]
Palestine	5 Feb 2022	3,078,533	samples	574,105	18.6	60.9	11.4	^[394]
Panama	28 Jan 2023	7,475,016	samples	1,029,701	13.8	179	24.7	^[395]
Papua New Guinea	17 Feb 2021	47,490	cases	961	2.0	0.53	0.011	^[396]
Paraguay	27 Mar 2022	2,609,819	samples	647,950	24.8	36.6	9.1	^[397]
Peru	17 Nov 2022	36,073,768	samples	4,177,786	11.6	109.9	12.7	^[398]
Philippines	7 Jan 2023	34,402,980	samples	4,073,980	11.8	34.1	4.0	^[399]^[400]
Poland	27 Apr 2022	36,064,311	samples	5,993,861	16.6	94.0	15.6	^[401]
Portugal	5 Jan 2022	27,515,490	samples	1,499,976	5.5	268	14.6	^[402]
Qatar	11 Nov 2022	4,061,988	cases	473,440	11.7	141	16.4	^[403]
Romania	29 Jan 2021	5,405,393	samples	724,250	13.4	27.9	3.7	^[404]
Russia	6 Jun 2022	295,542,733	samples	18,358,459	6.2	201	12.5	^[405]^[406]
Rwanda	6 Oct 2021	2,885,812	samples	98,209	3.4	22.3	0.76	^[407]
Saint Kitts and Nevis	26 Aug 2021	30,231	cases	995	3.3	57.6	1.9	^[408]
Saint Lucia	7 Oct 2022	212,132	samples	29,550	13.9	116.6	16.2	^[409]
Saint Vincent	28 Jan 2023	113,504	cases	9,585	8.4	103.0	8.7	^[410]
San Marino	29 Jan 2023	192,613	samples	23,427	12.2	563	68.4	^[411]
Saudi Arabia	26 Apr 2022	41,849,069	samples	753,632	1.8	120	2.2	^[412]
Senegal	12 Jul 2021	624,502	samples	46,509	7.4	3.9	0.29	^[413]
Serbia	2 Feb 2023	12,185,475	cases	2,473,599	20.3	175	35.5	^[414]
Singapore	3 Aug 2021	16,206,203	samples	65,315	0.40	284	1.1	^[415]^[416]
Slovakia	2 Feb 2023	7,391,882	samples	1,861,034	25.2	135	34.1	^[417]
Slovenia	2 Feb 2023	2,826,117	samples	1,322,282	46.8	135	63.1	^[418]
South Africa	24 May 2021	11,378,282	cases	1,637,848	14.4	19.2	2.8	^[419]^[420]
South Korea	1 Mar 2021	6,592,010	samples	90,029	1.4	12.7	0.17	^[421]
South Sudan	26 May 2021	164,472		10,688	6.5	1.3	0.084	^[422]
Spain	1 Jul 2021	54,128,524	samples	3,821,305	7.1	116	8.2	^[423]^[424]
Sri Lanka	30 Mar 2021	2,384,745	samples	93,128	3.9	10.9	0.43	^[425]^[426]
Sudan	7 Jan 2021	158,804	samples	23,316	14.7	0.36	0.053	^[259]
Sweden	24 May 2021	9,996,795	samples	1,074,751	10.8	96.8	10.4	^[427]^[428]
Switzerland^{[lower-alpha 12]}	7 Nov 2022	23,283,909	samples	4,276,836	18.4	270	49.7	^[429]
Taiwan^{[lower-alpha 13]}	3 Feb 2023	30,275,725	samples	8,622,129	28.48	128.3	36.528	^[430]
Tanzania	18 Nov 2020	3,880		509	13.1	0.0065	0.00085	^[259]
Thailand	4 Mar 2021	1,579,597	cases	26,162	1.7	2.3	0.038	^[431]
Togo	6 Jan 2023	807,269		39,358	4.9	9.4	0.46	^[432]
Trinidad and Tobago	3 Jan 2022	512,730	cases	92,997	18.1	37.6	6.8	^[433]
Tunisia	23 Aug 2021	2,893,625	samples	703,732	24.3	24.5	6.0	^[434]
Turkey	2 Jul 2021	61,236,294	samples	5,435,831	8.9	73.6	6.5	^[435]
Uganda	11 Feb 2021	852,444	samples	39,979	4.7	1.9	0.087	^[436]
Ukraine	24 Nov 2021	15,648,456	samples	3,367,461	21.5	37.2	8.0	^[437]
United Arab Emirates	1 Feb 2023	198,685,717	samples	1,049,537	0.53	2,070	10.9	^[438]
United Kingdom	19 May 2022	522,526,476	samples	22,232,377	4.3	774	32.9	^[439]
United States	29 Jul 2022	929,349,291	samples	90,749,469	9.8	281	27.4	^[440]^[441]
Uruguay	16 Apr 2022	6,089,116	samples	895,592	14.7	175	25.8	^[442]
Uzbekistan	7 Sep 2020	2,630,000	samples	43,975	1.7	7.7	0.13	^[443]
Venezuela	30 Mar 2021	3,179,074	samples	159,149	5.0	11.0	0.55	^[444]
Vietnam	28 Aug 2022	45,772,571	samples	11,403,302	24.9	46.4	11.6	^[445]
Zambia	10 Mar 2022	3,301,860	samples	314,850	9.5	19.0	1.8	^[446]
Zimbabwe	15 Oct 2022	2,529,087	samples	257,893	10.2	17.0	1.7	^[259]^[447]
Local time. For some countries it is unclear whether they report samples or cases. One person tested twice is recorded as one case and two samples. Excluding Taiwan. Excluding Northern Cyprus. Excluding Greenland and the Faroe Islands. Excluding Overseas France. Testing data from 4 May to 12 May is missing because of the transition to the new reporting system SI-DEP. Excluding Abkhazia and South Ossetia. Data for residents only. Excluding Transnistria. Northern Cyprus is not recognized as a sovereign state by any country except Turkey. Includes data for Liechtenstein. Not a United Nations member.

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