2019冠状病毒病加利福尼亚州疫情

2019冠状病毒病加利福尼亚州疫情
2019冠状病毒病加利福尼亚州疫情
	加利福尼亚州每十万人新增确诊感染病例图; 1000+ 名新增病例 500-1000 名新增病例 200 - 500 名新增病例 100 - 200 名新增病例 50 - 100 名新增病例 20 - 50 名新增病例 10 - 20 名新增病例 0 - 10 名新增病例无新增病例或无数据
	加利福尼亚州每十万人已确诊感染病例图; 10,000 已确诊感染 3000-10,000 已确诊感染 1000-3000 已确诊感染 300-1000 已确诊感染 100-300 已确诊感染 30-100 已确诊感染 0-30 已确诊感染无确诊病例或无数据 ;
加利福尼亚州累计确诊病例图
	加州累计确诊病例图(截止至3月29日) 1000+ 名确诊病例 500-999 名确诊病例 100-499 名确诊病例 10-99 名确诊病例 1-9 名确诊病例
疾病	2019冠状病毒病
病毒株	严重急性呼吸综合征冠状病毒2型（SARS-CoV-2）
地点	美国加利福尼亚州
首例确诊日期	2020年1月25日; （4年9个月1周又5天）
数据统计
确诊病例	2,988,326 (约翰斯·霍普金斯大学); 2,942,475 (California Department of Public Health（英语：California Department of Public Health）)
疑似病例	At least 221,000 in April 2020
死亡病例	33,589 (约翰斯·霍普金斯大学); 33,392 (California Department of Public Health（英语：California Department of Public Health）); 28,552 (Google新闻)
政府网站
	cdph.ca.gov/covid19
医学声明

2019冠状病毒病加利福尼亚州疫情，介绍2019冠状病毒病疫情中，美国加利福尼亚州各地的确诊病例，疑似病例个案详情。3月4日，在普莱瑟县出现第一例病死于冠状病毒病的病例之后，州长纽瑟姆宣布全州进入紧急状态。3月19日，州长纽瑟姆发布禁足令，要求加州的4000万名居民非必须情况下不得出门。^[5]3月22日，美国总统特朗普宣布加利福尼亚州为疫情重大灾区。根据加州公共卫生署（英语：California Department of Public Health）公布的数据，截至2020年11月27日，加州境内累计已有1,183,320名确诊病例和19,089名死亡病例。^[6]

6月18日，加州公共卫生署发布了通用面罩佩戴指南。各县可遵循此指南要求所有2岁以上的人在所有室内公共场所中以及在无法保持社交距离的室外场所中都需佩戴布制面罩。（餐馆内（如果保持社交距离），囚犯和患有特殊疾病的人除外）。^[7]^[8]

7月22日，加州超过纽约州成为美国确诊COVID-19病例最多的州。^[9]然而，加州的感染者比例比纽约要小。^[10]截至2020年9月28日，加州是美国确诊病例最多的州，人均确诊病例数位居全美第25位。在与COVID-19相关的死亡人数方面，加州第四多，在人均死亡人数中则排名第25。^[11]^[12]^[13]

加利福尼亚州是SARS-CoV-2 Epsilon变异株（英语：Epsilon variant of SARS-CoV-2）的起源地, 截至2021年3月，感染该变异株的病例占该州所有COVID-19确诊病例的35%。^[14]^[15]

时间线

美国加利福尼亚州2019冠状病毒病 ( 查论编 ) 死亡确诊病例 2020202020212021 1月1月2月2月3月3月4月4月5月5月6月6月7月7月8月8月9月9月10月10月11月11月12月12月 1月1月2月2月过去15天过去15天
日期	病例数	死亡数
2020-01-26	2(n.a.)
⋮	2(=)
2020-01-31	3(+50%)
2020-02-01	3
2020-02-02	6(+100%)
⋮	6(=)
2020-03-04	53(+783%)	1(n.a.)
2020-03-05	60(+13%)	1(=)
2020-03-06	69(+15%)	1(=)
2020-03-07	88(+28%)	1(=)
2020-03-08	114(+30%)	1(=)
2020-03-09	133(+17%)	1(=)
2020-03-10	157(+18%)	2(+100%)
2020-03-11	177(+13%)	3(+50%)
2020-03-12	198(+12%)	4(+33%)
2020-03-13	247(+25%)	5(+25%)
2020-03-14	335(+36%^[i])	6(+20%)
2020-03-15	392(+17%)	6(=)
2020-03-16	472(+20%)	11(+83%)
2020-03-17	598(+27%)	13(+18%)
2020-03-18	675(+13%)	16(+23%)
2020-03-19	1,006(+49%)	19(+19%)
2020-03-20	1,224(+22%^[ii])	23(+21%)
2020-03-21	1,468(+20%)	27(+17%)
2020-03-22	1,733(+18%)	27(=)
2020-03-23	2,102(+21%)	40(+48%)
2020-03-24	2,535(+21%)	53(+32%)
2020-03-25	3,006(+19%)	65(+22%)
2020-03-26	3,801(+26%)	78(+20%)
2020-03-27	4,643(+22%)	101(+29%)
2020-03-28	4,643	101
2020-03-29	5,763(+24%^[iii])	135(+34%)
2020-03-30	6,932(+20%^[iv])	150(+11%)
2020-03-31	8,155(+18%)	171(+14%)
2020-04-01	9,191(+13%)	203(+19%)
2020-04-02	10,701(+16%)	237(+17%)
2020-04-03	12,026(+12%)	276(+16%)
2020-04-04	13,438(+12%)	319(+16%)
2020-04-05	14,336(+6.7%)	343(+7.5%)
2020-04-06	15,865(+11%)	374(+9.0%)
2020-04-07	16,957(+6.9%)	442(+18%)
2020-04-08	18,309(+8.0%)	492(+11%)
2020-04-09	19,472(+6.4%)	541(+10%)
2020-04-10	20,615(+5.9%)	609(+13%)
2020-04-11	21,794(+5.7%)	651(+6.9%)
2020-04-12	22,348(+2.5%)	687(+5.5%)
2020-04-13	23,338(+4.4%)	758(+10%)
2020-04-14	24,424(+4.7%)	821(+8.3%)
2020-04-15	26,182(+7.2%)	890(+8.4%)
2020-04-16	27,528(+5.1%)	985(+11%)
2020-04-17	28,963(+5.2%)	1,072(+8.8%)
2020-04-18	30,333(+4.7%)	1,166(+8.8%)
2020-04-19	30,978(+2.1%)	1,208(+3.6%)
2020-04-20	33,261(+7.4%)	1,268(+5.0%)
2020-04-21	35,396(+6.4%)	1,354(+6.8%)
2020-04-22	37,369(+5.6%)	1,469(+8.5%)
2020-04-23	39,254(+5.0%)	1,562(+6.3%)
2020-04-24	41,137(+4.8%)	1,651(+5.7%)
2020-04-25	42,164(+2.5%)	1,710(+3.6%)
2020-04-26	43,464(+3.1%)	1,755(+2.6%)
2020-04-27	45,031(+3.6%)	1,809(+3.1%)
2020-04-28	46,500(+3.3%)	1,887(+4.3%)
2020-04-29	48,917(+5.2%)	1,982(+5.0%)
2020-04-30	50,442(+3.1%)	2,073(+4.6%)
2020-05-01	52,197(+3.5%)	2,171(+4.7%)
2020-05-02	53,616(+2.7%)	2,215(+2.0%)
2020-05-03	54,937(+2.5%)	2,254(+1.8%)
2020-05-04	56,212(+2.3%)	2,317(+2.8%)
2020-05-05	58,815(+4.6%)	2,412(+4.1%)
2020-05-06	60,614(+3.1%)	2,504(+3.8%)
2020-05-07	62,512(+3.1%)	2,585(+3.2%)
2020-05-08	64,561(+3.3%)	2,678(+3.6%)
2020-05-09	66,680(+3.3%)	2,745(+2.5%)
2020-05-10	67,939(+1.9%)	2,770(+0.91%)
2020-05-11	69,382(+2.1%)	2,847(+2.8%)
2020-05-12	71,141(+2.5%)	2,934(+3.1%)
2020-05-13	73,164(+2.8%)	3,032(+3.3%)
2020-05-14	74,936(+2.4%)	3,108(+2.5%)
2020-05-15	76,793(+2.5%)	3,204(+3.1%)
2020-05-16	78,839(+2.7%)	3,261(+1.8%)
2020-05-17	80,430(+2.0%)	3,302(+1.3%)
2020-05-18	81,795(+1.7%)	3,334(+0.97%)
2020-05-19	84,057(+2.8%)	3,436(+3.1%)
2020-05-20	86,197(+2.5%)	3,542(+3.1%)
2020-05-21	88,444(+2.6%)	3,630(+2.5%)
2020-05-22	90,631(+2.5%)	3,708(+2.1%)
2020-05-23	92,710(+2.3%)	3,774(+1.8%)
2020-05-24	94,558(+2.0%)	3,795(+0.56%)
2020-05-25	96,733(+2.3%)	3,814(+0.50%)
2020-05-26	98,980(+2.3%)	3,880(+1.7%)
2020-05-27	101,697(+2.7%)	3,973(+2.4%)
2020-05-28	103,886(+2.2%)	4,068(+2.4%)
2020-05-29	106,878(+2.9%)	4,156(+2.2%)
2020-05-30	110,583(+3.5%)	4,213(+1.4%)
2020-05-31	113,006(+2.2%)	4,251(+0.90%)
2020-06-01	115,310(+2.0%)	4,286(+0.82%)
2020-06-02	117,687(+2.1%)	4,361(+1.7%)
2020-06-03	119,807(+1.8%)	4,422(+1.4%)
2020-06-04	122,901(+2.6%)	4,485(+1.4%)
2020-06-05	126,016(+2.5%)	4,559(+1.6%)
2020-06-06	128,812(+2.2%)	4,626(+1.5%)
2020-06-07	131,319(+1.9%)	4,653(+0.58%)
2020-06-08	133,489(+1.7%)	4,697(+0.95%)
2020-06-09	136,191(+2.0%)	4,776(+1.7%)
2020-06-10	139,281(+2.3%)	4,881(+2.2%)
2020-06-11	141,983(+1.9%)	4,943(+1.3%)
2020-06-12	145,643(+2.6%)	4,989(+0.93%)
2020-06-13	148,855(+2.2%)	5,064(+1.5%)
2020-06-14	151,452(+1.7%)	5,089(+0.49%)
2020-06-15	153,560(+1.4%)	5,121(+0.63%)
2020-06-16	157,015(+2.2%)	5,208(+1.7%)
2020-06-17	161,099(+2.6%)	5,290(+1.6%)
2020-06-18	165,416(+2.7%)	5,360(+1.3%)
2020-06-19	169,309(+2.4%)	5,424(+1.2%)
2020-06-20	173,824(+2.7%)	5,495(+1.3%)
2020-06-21	178,054(+2.4%)	5,515(+0.36%)
2020-06-22	183,073(+2.8%)	5,580(+1.2%)
2020-06-23	190,222(+3.9%)	5,632(+0.93%)
2020-06-24	195,571(+2.8%)	5,733(+1.8%)
2020-06-25	200,461(+2.5%)	5,812(+1.4%)
2020-06-26	206,433(+3.0%)	5,872(+1.0%)
2020-06-27	211,243(+2.3%)	5,905(+0.56%)
2020-06-28	216,550(+2.5%)	5,936(+0.52%)
2020-06-29	222,917(+2.9%)	5,980(+0.74%)
2020-06-30	232,657(+4.4%)	6,090(+1.8%)
2020-07-01	240,195(+3.2%)	6,163(+1.2%)
2020-07-02	248,235(+3.3%)	6,263(+1.6%)
2020-07-03	254,745(+2.6%)	6,313(+0.8%)
2020-07-04	260,155(+2.1%)	6,331(+0.3%)
2020-07-05	271,684(+4.4%)	6,337(+0.1%)
2020-07-06	277,774(+2.2%)	6,448(+1.8%)
2020-07-07	289,468(+4.2%)	6,562(+1.8%)
2020-07-08	296,499(+2.4%)	6,711(+2.3%)
2020-07-09	304,297(+2.6%)	6,851(+2.1%)
2020-07-10	312,344(+2.6%)	6,945(+1.4%)
2020-07-11	320,804(+2.7%)	7,014(+1.0%)
2020-07-12	329,162(+2.6%)	7,040(+0.4%)
2020-07-13	336,508(+2.2%)	7,087(+0.7%)
2020-07-14	347,634(+3.3%)	7,227(+2.2%)
2020-07-15	356,178(+2.5%)	7,345(+1.6%)
2020-07-16	366,164(+2.8%)	7,475(+1.8%)
2020-07-17	375,363(+2.5%)	7,595(+1.6%)
2020-07-18	384,692(+2.4%)	7,685(+1.2%)
2020-07-19	391,538(+1.8%)	7,694(+0.1%)
2020-07-20	400,769(+2.4%)	7,755(+0.8%)
2020-07-21	413,576(+3.2%)	7,870(+1.5%)
2020-07-22	425,616(+2.9%)	8,027(+2%)
2020-07-23	435,334(+2.3%)	8,186(+2%)
2020-07-24	445,400(+2.3%)	8,337(+1.8%)
2020-07-25	453,659(+1.9%)	8,416(+0.9%)
2020-07-26	460,554(+1.5%)	8,445(+0.34%)
2020-07-27	466,550(+1.3%)	8,518(+0.86%)
2020-07-28	475,305(+1.9%)	8,715(+2.3%)
2020-07-29	485,502(+2.1%)	8,909(+2.2%)
2020-07-30	493,588(+1.7%)	9,005(+1.1%)
2020-07-31	500,130(+1.3%)	9,224(+2.4%)
2020-08-01	509,162(+1.8%)	9,356(+1.4%)
2020-08-02	514,901(+1.1%)	9,388(+0.34%)
2020-08-03	519,427(+0.88%)	9,501(+1.2%)
2020-08-04	524,722(+1%)	9,703(+2.1%)
2020-08-05	529,980(+1%)	9,869(+1.7%)
2020-08-06	538,416(+1.6%)	10,011(+1.4%)
2020-08-07	545,787(+1.4%)	10,189(+1.8%)
2020-08-08	554,160(+1.5%)	10,293(+1%)
2020-08-09	561,911(+1.4%)	10,359(+0.64%)
2020-08-10	574,411(+2.2%)	10,468(+1.1%)
2020-08-11	586,056(+2%)	10,648(+1.7%)
2020-08-12	593,141(+1.2%)	10,808(+1.5%)
2020-08-13	601,075(+1.3%)	10,996(+1.7%)
2020-08-14	613,689(+2.1%)	11,147(+1.4%)
2020-08-15	621,562(+1.3%)	11,224(+0.69%)
2020-08-16	628,031(+1%)	11,242(+0.16%)
2020-08-17	632,667(+0.74%)	11,342(+0.89%)
2020-08-18	638,831(+0.97%)	11,523(+1.6%)
2020-08-19	644,751(+0.93%)	11,686(+1.4%)
2020-08-20	650,336(+0.87%)	11,821(+1.2%)
2020-08-21	656,892(+1%)	11,988(+1.4%)
2020-08-22	663,669(+1%)	12,134(+1.2%)
2020-08-23	668,615(+0.75%)	12,152(+0.15%)
2020-08-24	673,095(+0.67%)	12,257(+0.86%)
2020-08-25	679,099(+0.89%)	12,407(+1.2%)
2020-08-26	683,529(+0.65%)	12,550(+1.2%)
2020-08-27	688,858(+0.78%)	12,690(+1.1%)
2020-08-28	693,839(+0.72%)	12,834(+1.1%)
2020-08-29	699,909(+0.87%)	12,905(+0.55%)
2020-08-30	704,085(+0.6%)	12,933(+0.22%)
2020-08-31	707,797(+0.53%)	13,018(+0.66%)
2020-09-01	712,052(+0.6%)	13,163(+1.1%)
2020-09-02	717,177(+0.72%)	13,327(+1.2%)
2020-09-03	722,283(+0.71%)	13,490(+1.2%)
2020-09-04	727,239(+0.69%)	13,643(+1.1%)
2020-09-05	732,144(+0.67%)	13,709(+0.48%)
2020-09-06	735,235(+0.42%)	13,726(+0.12%)
2020-09-07	737,911(+0.36%)	13,758(+0.23%)
2020-09-08	739,527(+0.22%)	13,841(+0.6%)
2020-09-09	742,865(+0.45%)	13,978(+0.99%)
2020-09-10	746,191(+0.45%)	14,089(+0.79%)
2020-09-11	750,298(+0.55%)	14,251(+1.1%)
2020-09-12	754,923(+0.62%)	14,329(+0.55%)
2020-09-13	757,778(+0.38%)	14,385(+0.39%)
2020-09-14	760,013(+0.29%)	14,451(+0.46%)
2020-09-15	762,963(+0.39%)	14,615(+1.1%)
2020-09-16	766,201(+0.42%)	14,721(+0.73%)
2020-09-17	769,831(+0.47%)	14,812(+0.62%)
2020-09-18	774,135(+0.56%)	14,912(+0.68%)
2020-09-19	778,400(+0.55%)	14,987(+0.5%)
2020-09-20	781,694(+0.42%)	15,018(+0.21%)
2020-09-21	784,324(+0.34%)	15,071(+0.35%)
2020-09-22	787,470(+0.4%)	15,204(+0.88%)
2020-09-23	790,640(+0.4%)	15,314(+0.72%)
2020-09-24	794,040(+0.43%)	15,398(+0.55%)
2020-09-25	798,237(+0.53%)	15,532(+0.87%)
2020-09-26	802,308(+0.51%)	15,587(+0.35%)
2020-09-27	805,263(+0.37%)	15,608(+0.13%)
2020-09-28	807,425(+0.27%)	15,640(+0.21%)
2020-09-29	810,625(+0.4%)	15,792(+0.97%)
2020-09-30	813,687(+0.38%)	15,888(+0.61%)
2020-10-01	817,277(+0.44%)	15,986(+0.62%)
2020-10-02	819,436(+0.26%)	16,074(+0.55%)
2020-10-03	823,729(+0.52%)	16,120(+0.29%)
2020-10-04	826,784(+0.37%)	16,149(+0.18%)
2020-10-05	828,461(+0.2%)	16,177(+0.17%)
2020-10-06	831,225(+0.33%)	16,288(+0.69%)
2020-10-07	834,800(+0.43%)	16,361(+0.45%)
2020-10-08	838,606(+0.46%)	16,428(+0.41%)
2020-10-09	842,776(+0.5%)	16,500(+0.44%)
2020-10-10	846,579(+0.45%)	16,564(+0.39%)
2020-10-11	850,028(+0.41%)	16,572(+0.05%)
2020-10-12	852,406(+0.28%)	16,581(+0.05%)
2020-10-13	855,072(+0.31%)	16,639(+0.35%)
2020-10-14	858,401(+0.39%)	16,757(+0.71%)
2020-10-15	861,476(+0.36%)	16,830(+0.44%)
2020-10-16	864,455(+0.35%)	16,899(+0.41%)
2020-10-17	867,317(+0.33%)	16,943(+0.26%)
2020-10-18	870,791(+0.4%)	16,970(+0.16%)
2020-10-19	874,077(+0.38%)	16,992(+0.13%)
2020-10-20	877,784(+0.42%)	17,027(+0.21%)
2020-10-21	880,724(+0.33%)	17,189(+0.95%)
2020-10-22	886,865(+0.7%)	17,262(+0.42%)
2020-10-23	892,810(+0.67%)	17,311(+0.28%)
2020-10-24	898,029(+0.58%)	17,345(+0.2%)
2020-10-25	901,010(+0.33%)	17,357(+0.07%)
2020-10-26	904,198(+0.35%)	17,400(+0.25%)
2020-10-27	908,713(+0.5%)	17,475(+0.43%)
2020-10-28	912,904(+0.46%)	17,541(+0.38%)
2020-10-29	916,918(+0.44%)	17,571(+0.17%)
2020-10-30	922,005(+0.55%)	17,626(+0.31%)
2020-10-31	926,534(+0.49%)	17,667(+0.23%)
2020-11-01	930,628(+0.44%)	17,672(+0.03%)
2020-11-02	934,672(+0.43%)	17,686(+0.08%)
2020-11-03	940,010(+0.57%)	17,752(+0.37%)
2020-11-04	944,576(+0.49%)	17,815(+0.35%)
2020-11-05	951,094(+0.69%)	17,866(+0.29%)
2020-11-06	956,957(+0.62%)	17,939(+0.41%)
2020-11-07	964,639(+0.8%)	17,963(+0.13%)
2020-11-08	971,851(+0.75%)	17,977(+0.08%)
2020-11-09	977,218(+0.55%)	18,001(+0.13%)
2020-11-10	984,682(+0.76%)	18,070(+0.38%)
2020-11-11	991,609(+0.7%)	18,108(+0.21%)
2020-11-12	998,502(+0.7%)	18,137(+0.16%)
2020-11-13	1,008,377(+0.99%)	18,218(+0.45%)
2020-11-14	1,019,345(+1.1%)	18,253(+0.19%)
2020-11-15	1,029,235(+0.97%)	18,263(+0.05%)
2020-11-16	1,037,978(+0.85%)	18,299(+0.2%)
2020-11-17	1,047,789(+0.95%)	18,360(+0.33%)
2020-11-18	1,059,267(+1.1%)	18,466(+0.58%)
2020-11-19	1,072,272(+1.2%)	18,557(+0.49%)
2020-11-20	1,087,714(+1.4%)	18,643(+0.46%)
2020-11-21	1,102,033(+1.3%)	18,676(+0.18%)
2020-11-22	1,110,370(+0.76%)	18,726(+0.27%)
2020-11-23	1,125,699(+1.4%)	18,769(+0.23%)
2020-11-24	1,144,049(+1.6%)	18,875(+0.56%)
2020-11-25	1,158,689(+1.3%)	18,979(+0.55%)
2020-11-26	1,171,324(+1.1%)	19,033(+0.28%)
2020-11-27	1,183,320(+1%)	19,089(+0.29%)
2020-11-28	1,198,934(+1.3%)	19,121(+0.17%)
2020-11-29	1,212,968(+1.2%)	19,141(+0.1%)
2020-11-30	1,225,189(+1%)	19,211(+0.37%)
2020-12-01	1,245,948(+1.7%)	19,324(+0.59%)
2020-12-02	1,264,539(+1.5%)	19,437(+0.58%)
2020-12-03	1,286,557(+1.7%)	19,582(+0.75%)
2020-12-04	1,311,625(+1.9%)	19,791(+1.1%)
2020-12-05	1,341,700(+2.3%)	19,876(+0.43%)
2020-12-06	1,366,435(+1.8%)	19,935(+0.3%)
2020-12-07	1,389,707(+1.7%)	20,047(+0.56%)
2020-12-08	1,420,558(+2.2%)	20,243(+0.98%)
2020-12-09	1,450,235(+2.1%)	20,463(+1.1%)
2020-12-10	1,485,703(+2.4%)	20,622(+0.78%)
2020-12-11	1,521,432(+2.4%)	20,847(+1.1%)
2020-12-12	1,551,766(+2%)	20,969(+0.59%)
2020-12-13	1,585,044(+2.1%)	21,046(+0.37%)
2020-12-14	1,617,370(+2%)	21,188(+0.67%)
2020-12-15	1,671,081(+3.3%)	21,481(+1.4%)
2020-12-16	1,723,362(+3.1%)	21,860(+1.8%)
2020-12-17	1,764,374(+2.4%)	22,160(+1.4%)
2020-12-18	1,807,982(+2.5%)	22,432(+1.2%)
2020-12-19	1,854,456(+2.6%)	22,593(+0.72%)
2020-12-20	1,892,348(+2%)	22,676(+0.37%)
2020-12-21	1,925,007(+1.7%)	22,923(+1.1%)
2020-12-22	1,964,076(+2%)	23,284(+1.6%)
2020-12-23	2,003,146(+2%)	23,635(+1.5%)
2020-12-24	2,042,290(+2%)	23,947(+1.3%)
2020-12-25	2,072,665(+1.5%)	23,983(+0.15%)
2020-12-26	2,122,806(+2.4%)	24,220(+0.99%)
2020-12-27	2,155,976(+1.6%)	24,284(+0.26%)
2020-12-28	2,187,221(+1.4%)	24,526(+1%)
2020-12-29	2,218,142(+1.4%)	24,958(+1.8%)
2020-12-30	2,245,379(+1.2%)	25,386(+1.7%)
2020-12-31	2,292,568(+2.1%)	25,971(+2.3%)
2021-01-01	2,345,909(+2.3%)	26,357(+1.5%)
2021-01-02	2,391,261(+1.9%)	26,538(+0.69%)
2021-01-03	2,420,894(+1.2%)	26,635(+0.37%)
2021-01-04	2,452,334(+1.3%)	27,003(+1.4%)
2021-01-05	2,482,226(+1.2%)	27,462(+1.7%)
2021-01-06	2,518,611(+1.5%)	28,045(+2.1%)
2021-01-07	2,568,641(+2%)	28,538(+1.8%)
2021-01-08	2,621,277(+2%)	29,233(+2.4%)
2021-01-09	2,670,962(+1.9%)	29,701(+1.6%)
2021-01-10	2,710,801(+1.5%)	29,965(+0.89%)
2021-01-11	2,747,288(+1.3%)	30,513(+1.8%)
2021-01-12	2,781,039(+1.2%)	31,102(+1.9%)
2021-01-13	2,816,969(+1.3%)	31,654(+1.8%)
2021-01-14	2,859,624(+1.5%)	32,291(+2%)
2021-01-15	2,900,246(+1.4%)	32,960(+2.1%)
2021-01-16	2,942,475(+1.5%)	33,392(+1.3%)
2021-01-17	2,973,174(+1%)	33,593(+0.6%)
2021-01-18	2,996,968(+0.8%)	33,739(+0.43%)
2021-01-19	3,019,371(+0.75%)	34,433(+2.1%)
2021-01-20	3,039,044(+0.65%)	35,004(+1.7%)
2021-01-21	3,062,068(+0.76%)	35,768(+2.2%)
2021-01-22	3,085,040(+0.75%)	36,361(+1.7%)
2021-01-23	3,109,151(+0.78%)	36,790(+1.2%)
2021-01-24	3,136,158(+0.87%)	37,118(+0.89%)
2021-01-25	3,153,186(+0.54%)	37,527(+1.1%)
2021-01-26	3,169,914(+0.53%)	38,224(+1.9%)
2021-01-27	3,186,610(+0.53%)	38,961(+1.9%)
2021-01-28	3,205,947(+0.61%)	39,578(+1.6%)
2021-01-29	3,224,374(+0.57%)	40,216(+1.6%)
2021-01-30	3,243,348(+0.59%)	40,697(+1.2%)
2021-01-31	3,258,706(+0.47%)	40,908(+0.52%)
2021-02-01	3,270,770(+0.37%)	41,330(+1%)
2021-02-02	3,281,271(+0.32%)	41,811(+1.2%)
2021-02-03	3,294,447(+0.4%)	42,466(+1.6%)
来源: 更新数据来自加州公共卫生署. cdph.ca.gov （英语）. Notes: ^ 2020年3月14日, 加州公共卫生署由原先报告截至上午8时的病例更改为下午6时。由于报告间隔时间超过24小时(如34小时)，因此可能会报告更多病例。 ^ 2020年3月20日，加州公共卫生署开始由报告截至下午6时的病例更改为下午2点。由于报告间隔时间短于24小时（如20小时），因此可能会报告较少的病例。 ^ 加州公共卫生署在2020年3月28日没有报告数据。因此，在2020年3月29日，报告间隔为2天（或48小时）。 ^ 2020年3月30日，加州公共卫生署停止报告统计数据的确切时间。

查论编 2019冠状病毒病加利福尼亚州疫情，按加州各县
县	病例数^[a]	死亡	康复^[b]	来源
58	611,142	11,121		来源
洛杉矶	218,693	5,214	–	^[16]
河滨	45,662	881	23,689	^[17]
橙县	42,854^[c]	789	33,697	^[18]
圣贝纳迪诺	39,374	561	31,755	^[19]
圣迭戈	34,065	622	–	^[20]
克恩	25,888	204	8,105	^[21]
弗雷斯诺	19,157	203	8,425	^[22]
圣华金	14,651	261	13,054	^[23]
阿拉梅达 ^[d]	14,558	219	–	^[24]^[25]
圣克拉拉	13,856	208	–	^[26]
萨克拉门托	13,615	199	10,385	^[27]
图莱里	12,105	205	10,568	^[28]
斯坦尼斯劳斯	11,953	195	10,874	^[29]
康特拉科斯塔	10,756	152	9,394	^[30]
因皮里尔	10,035	257	8,872	^[31]
文图拉	9,090	95	6,178	^[32]
旧金山	8,157	69	–	^[33]
圣巴巴拉	7,274^[e]	77^[f]	6,907^[g]	^[34]
圣马特奥	6,952	126	–	^[35]
默塞德	6,777	89	4,193	^[36]
蒙特雷	5,890	41	3,746	^[37]
金斯	5,310^[h]	64^[i]	2,911^[j]	^[38]
索拉诺	4,596	41	4,241	^[39]
索诺玛	4,157	51	1,989	^[40]
马林	3,474	57	3,080	^[41]
马德拉	2,924	47	2,103	^[42]
普莱瑟	2,543	27	2,095	^[43]
圣路易斯-奥比斯波	2,439	18	1,980	^[44]
优洛	1,966	46	-	^[45]
圣克鲁斯	1,371	6	376	^[46]
比尤特	1,370	12	1,171	^[47]
纳帕	1,206	11	393	^[48]
萨特	1,091	7	588	^[49]
埃尔多拉多	827	2	661	^[50]
圣贝尼托	815	4	737	^[51]
尤巴	740	4	386	^[49]
拉森	703^[k]	0	629^[l]	^[52]
门多西诺	529	10	401	^[53]
沙斯塔	488	10	436	^[54]
科卢萨	409	5	379	^[55]
格伦	407	3	380	^[56]
内华达	372	2	313	^[57]
蒂黑马	318	1	275	^[58]
洪堡	309	4	242	^[59]
莱克	268	2	236	^[60]
阿马多尔	208	11	149	^[61]
卡拉韦拉斯	174	1	150	^[62]
莫诺	160	1	-	^[63]
图奥勒米	160	2	155	^[64]^[65]
锡斯基尤	111	0	101	^[66]
德尔诺特	106	0	92	^[67]
因约	106	3	54	^[68]
马里波萨	64	2	58	^[69]
普卢默斯	39	0	35	^[70]
特里提蒂	8	0	5	^[71]
谢拉	6	0	4	^[72]
莫多克	5	0	5	^[73]
阿尔派恩	1	0	1	^[74]
截止至2020年8月14日(UTC)
^ 已被申报确诊的病例；实际的病例数可能更高；不包括被遣返回国的病例； ^ “–”代表数据缺失，并不代表0病例。 ^ 其中517例确诊病例来自在橙县监狱服刑的囚犯。 ^ 包括没有被阿拉梅达县公共卫生署统计在内的伯克利市的数据 ^ 其中1,019例确诊病例来自隆波克联邦监狱。 ^ 其中3例死亡病例来自隆波克联邦监狱。 ^ 其中1,016例康复病例来自隆波克联邦监狱。 ^ 其中1,937例确诊病例来自金斯县三个联邦监狱。 ^ 其中6例死亡病例来自金斯县三个联邦监狱。 ^ 其中1,172例康复病例来自金斯县三个联邦监狱。 ^ 其中625例确诊病例来自拉森县三座监狱。 ^ 其中566例康复病例来自拉森县三座监狱。

2020年1月

1月25日

美国疾病控制与预防中心（CDC）宣布加州出现了第一例2019冠状病毒病病例，这也是美国的第三起病例。患者是一位50岁左右的男性。因为身体情况良好，他已于2月1日从加州橙县的医院出院，回家隔离。^[75]

1月31日

CDC确认了全美第七起病例，是一位来自加州圣克拉拉县的一位男性，近期前往过武汉。^[76]该男子在家病愈，于2月20日解除了居家隔离。^[77]

2月

2月2日

CDC确认了全美第九起病例，是一位来自加州圣克拉拉县的女性，发病近期曾去过武汉。这一病例和之前圣克拉拉的第一起病例没有关联。^[78]同日，CDC报告了全美第10和11起病例，都位于加州圣贝尼托县。这其中包括全美第二例人传人病例。^[79]

3月

3月1日

加州阿拉梅达县和索拉诺县出现了两起确诊病例，都是湾北瓦卡维尔医院（NorthBay VacaValley Hospital）的医护。两位医护和之前2月26日在索拉诺县的一例病例有接触。^[80]
圣克拉拉县又出现了三例确诊病例，该县确诊病例由此达到七例。其中第五例是一位有慢性病的女性，第六和第七例是一对曾前往过埃及的伴侣，三例病例都已入院。^[81]

3月2日

圣克拉拉县公共卫生部报告了两起新病例，该县确诊病例由此达到九例。新的两位病患都和之前的病例有室内接触，两位病患已经被居家隔离。^[82]
在普莱瑟县，一位曾与索拉诺县湾北瓦卡维尔医院某确诊病例近距离接触过的护工被检出冠状病毒阳性。^[83]
在索诺马县，一位居民据称被检出冠状病毒阳性。该居民刚从一艘从旧金山到墨西哥的邮轮上返回。^[84]
在圣马特奥县，一位成年人居民被检测出冠状病毒阳性，被送入医院隔离。该居民的感染方式不明。^[84]

3月3日

该日有12例新确诊病例。

圣克拉拉县的公共卫生官员称，在该县有两例来源不明的病例。^[85]
康特拉科斯塔县确认了一例来源不明的病例，已送入医院治疗。^[86]
洛杉矶县确认了六起新病例。^[87]^[88]^[89]^[90]
阿拉梅达县伯克利市出现第一例病例，该病例近期前往过意大利，已被居家隔离。^[91]
橙县新增两例确诊病例：一例是一位60岁左右的男子，另一例是一位30岁左右的女子。两位病患都曾前往过受冠状病毒病疫情影响的国家。^[92]

3月4日

加州所属的公共卫生官员在普莱瑟县报告了该县第二例病例，是一位老年居民，健康状况不佳，曾乘坐过至尊公主号邮轮。该邮轮2月11日由旧金山起航前往墨西哥，于2月21日返回。^[93]该日早先的报道称该病例已经入院、生命危急。之后，普莱瑟县的公共卫生官员在同日宣布该病例死亡。这是全美由COVID-19病毒导致的第11起死亡，且是全美华盛顿州之外第一例罹患冠状病毒死亡的病例。^[94]^[95]该病例的感染源被认为和3月2日在索诺玛县确诊的病例相同，两者皆在同一时段乘坐过至尊公主号邮轮。^[96]^[97]鉴此，拥有至尊公主号邮轮的公主邮轮公司开始与CDC、加州政府和旧金山公共卫生官员合作。考虑到至尊公主号上可能暴发疫情，该公司暂时停止了至尊公主号到墨西哥恩森那达的航程，令其返回旧金山。CDC命令隔离至尊公主号上可能和该日病死的病例有接触过的62名乘客。^[98]
与此同时，至尊公主号上11例乘客和10名船员出现了冠状病毒病的可能症状。加州政府命令至尊公主号离岸停留，并将把检测试剂盒空运到邮轮上。^[99]^[100]^[101]^[102]^[103]^[104]
圣克拉拉县确认了三例新病例。^[105]

3月5日

旧金山公共卫生部报告说，旧金山城内出现了两例社区传播病例。^[106]两例病例之间没有联系，分别收治于在两家不同的医院。其中一例是一位90岁的男性，健康状况底下；另一例是一位40岁左右的女性。两例病例近期既没有旅行，也没有和其他冠状病毒病病患接触。^[107]
圣克拉拉县新增六例确诊病例。^[108]
在圣迭戈，由于一家AT&T零售店的员工被检测出冠状病毒阳性，该公司的六家零售店宣布关停。^[109]^[110]
同时，阳谷市的公共卫生官员报告说，有一名72岁男性在家中昏迷不醒，可能是加州第二例冠状病毒病导致的死亡。该男性的家属称，该男性也曾乘坐过至尊公主号邮轮。^[111]^[112]^[113]

3月6日

阿拉梅达县出现了该县的第二例病例，该病例曾乘坐过至尊公主号邮轮。^[114]
康特拉科斯塔县新增三例确诊病例，两例曾乘坐过至尊公主号邮轮。^[115]
普莱瑟县新增三例确诊病例，都曾乘坐过至尊公主号邮轮。^[116]
圣克拉拉县新增四例确诊病例，至此该县共确诊24例病例。^[117]
- 在该县下辖的阳谷市，空天公司、政府承包商洛克希德·马丁公司宣布，其阳谷市分处的一名员工冠状病毒检测为阳性。^[118]
优洛县报告其第一例病例，是通过社群感染的。^[119]

3月7日

圣克拉拉县新增八例确诊病例。至此，该县确诊病例共32例。^[120]
- 在该县的斯坦福医学院，一名教职员工被检测出冠状病毒阳性。^[121]该教职员工出现症状后中止其工作，其工作的地方关闭并进行清洁。^[121]
圣克鲁斯县出现了该县的第一例确诊病例，该病例曾于2月11日至2月21日期间乘坐过至尊公主号邮轮。^[122]
旧金山市新增六例疑似病例，全部被居家隔离，状态良好。每位病患都接触过已确诊的病例。^[123]
在萨克拉门托县埃尔克格罗夫市，一户人家被全部检测出冠状病毒阳性，随后被隔离。因此，埃尔克格罗夫统一学区于3月7日至13日停学，暂停一切的学生活动。在一封给家庭的公开信中，学区官员称没有任何学生或者教职人员被检测出冠状病毒阳性。^[124]
马德拉县出现了该县的第一起确诊病例，该病例曾乘坐过至尊公主号邮轮。该病例的配偶当时和该病例同在邮轮上。两人都被带入马德拉县社区医院进行隔离观察。^[125]
在弗雷斯诺县，两名至尊公主号上的前乘客被隔离观察，一人被检测出冠状病毒阳性，成为该县的第一例确诊病例。^[126]

3月8日

康特拉科斯塔县新增五例病例，其中四例没有旅行史，也没有接触过确诊病例，都已入院治疗。第五例接触过一例确诊病例，现已居家隔离。至此，该县确诊病例共九例。^[127]
圣克拉拉县新增五例病例，该县确诊病例共37例。^[128]
普莱瑟县罗克林市的山脉学院（Sierra College）中，两位办公人员和冠状病毒病病患有过接触，随即被隔离。学院对学生展开了化验，并宣布3月18日起将会在网上授课。同时，该学院将会减少学生活动，禁止学生前往观看体育竞赛。^[129]
沙斯塔县确诊第一例病例，是一位五十岁男性，有近期旅行史，已居家隔离。^[130]
里弗赛德县新增一例病例，在兰乔米拉市艾森豪威尔卫生中心治疗。该县随后进入公共卫生紧急状态。^[131]

3月9日

圣克拉拉县出现第二例病死病例，^[132]是一位已经住院数周的女性，约60岁左右。她是该县第一例无国际旅行史、无接触史的病例，这意味着她是通过社群传播感染的。该病患于2月28日确诊，是该县第三例确诊病例。^[133]
旧金山市新增五例确诊病例，新增确诊的病例都接触过已确诊的病例。新确诊的病例全部被隔离在家，健康状况良好。至此，旧金山市确诊病例共13例。^[134]
在萨克拉门托县埃尔克格罗夫市，一位学龄儿童被检测出冠状病毒阳性。^[135]

3月10日

州长纽森宣布新增24例确诊病例，加州总确诊病例数达157例。^[136]
旧金山市新增一例确诊，该市总确诊病例数达13例，湾区总确诊病例数达70例。^[137]
萨克拉门托县埃尔克格罗夫市某养老院的一位住户被检测出冠状病毒阳性。该县卫生官员称，他们每日只能测试20人，所以会将所有精力放在检测该养老院的住户上面。^[138]该呈阳性的住户于同日死于冠状病毒病。^[139]
圣迭戈县出现第一例疑似病例，是一位女性。该女性已住入Scripps Green医院，正在等待CDC的检测结果。该病例有海外旅行史，但归国时没有经历14日的隔离，这意味着她并没有前往在当时的“高危”国家。^[140]

3月11日

马林县新增两例病例，该县确诊病例数达三例。新确诊的两例病例和该县的第一例病例住在一起，而第一例病例曾乘坐过至尊公主号邮轮。新增的两例病例已被隔离在家，症状轻微，无需住院。^[141]
洛杉矶县的一名60岁左右、健康状况欠佳的女性于当日病逝。她不是洛杉矶县的居民，之前有多次旅行记录，曾在韩国长时间驻留。这是洛杉矶县第一例病死、全加州第四例。^[142]
圣克拉拉县：圣何塞国际机场称三名在该机场工作的运输安全管理局（TSA）员工被检出冠状病毒呈阳性。^[143]三名人员都在B号航站楼工作；因此，已有42名TSA员工被隔离。^[144]
阿拉梅达县的一名消防员被检出冠状病毒呈阳性，已被隔离。^[145]

3月12日

阿拉梅达县当日新确诊四例病例，该县总病例数达七例。新确诊四例中的两例是通过社群传播染病的，这在该县第一次出现；四例中其他两例和之前的确诊病例有过接触。^[146]
旧金山市县新增四起病例，该地区总病例数达18例。新增病例中的两例已经被送入医院，另外两例被隔离在家。新增的病例中，一例和之前的确诊病例有过接触，其余三例近期没有前往具有冠状病毒病病例的国家，也没有和确诊病例接触过。^[147]
圣克拉拉县：圣何塞消防局（英语：San Jose Fire Department）的四名消防员被检出冠状病毒呈阳性。四名患病的消防员的多位家人也被检测出阳性来。^[148]

3月13日

圣华金县当日新增五例病例，该县总病例数达八例。^[149]圣华金县公共卫生部于当日宣布进入公共卫生紧急状态，该县所有的学校停课至4月6日。^[150]
圣克拉拉县新增13例病例，该县总病例数达79例。当地的健康官员报告说，该县出现了第二例死亡病例，是一位80岁左右的女性，3月9日被送入医院。^[151]
- 在圣何塞，圣何塞国际机场出现了第四名呈病毒阳性的TSA员工。另有两名消防员被检出病毒呈阳性；至此，圣何塞消防局共有六人确诊。因此，消防局剩下的70名消防员被隔离观察。^[151]
- 斯坦福大学确认说，一名本科生被检出呈病毒阳性；该病例已经自我隔离。^[152]

3月14日

圣克拉拉县当日新增17例病例，该县病例总数达91例。^[153]
旧金山市县新增五例病例，该地区病例总数达28例。^[154]该市发布命令禁止市民造访医院。^[155]
马林县新增两例病例，该县病例总数达五例。新增的两例没有和确诊病例接触过，很可能是通过社群传播感染的，这将会是该县出现的第一次社群传播。新增的两例病例将会被隔离在家直到病愈。^[156]
阿拉梅达县伯克利市加利福尼亚大学伯克利分校一名学生检测呈冠状病毒阳性。这名学生既不住在学校，也不住在伯克利市。该生已经在家自我隔离，健康状况良好，没有出现严重的症状。^[157]
圣路易斯-奥比斯波县在宣布进入紧急状态、关停学校之后，出现了第一例确诊病例。该病人来自该县北部（阿塔斯卡德罗、邓普顿和帕索罗布尔斯地区），已被隔离，正在康复。^[158]

3月15日

旧金山市县新增九例病例，该地区病例总数达37例。^[159]其中，两名加利福尼亚大学旧金山分校的卫生工作者被检测出呈病毒阳性，他们已经自我隔离。^[160]
圣马特奥县报告了该县第一例死亡的病例；该县病例总数为32例。^[161]
圣克拉拉县新增23例，该县病例总数达114例。^[162]
圣巴巴拉县出现第一例确诊病例。^[163]
圣贝纳迪诺县出现第一例确诊病例。^[164]
圣路易斯-奥比斯波县的公共卫生实验室在上周进行了超过100例病毒测验，确诊了第二例病例。病人现在自我隔离在家。^[165]

3月16日

圣马特奥县报告10例新增病例，该县确诊病例共41例。^[166]
阿拉梅达县报告8例新增病例，该县确诊病例累计达18例。^[167]
圣克拉拉县报告24例新增病例，该县确诊病例累计达138例。^[168]
旧金山市县报告3例新增病例，该市县确诊病例累计达40例。^[169]
洛杉矶县报告25例新增病例，该县确诊病例累计达94例。^[170]
圣迭戈县确诊病例增加至55例。^[171]
康特拉科斯塔县确诊病例增加至34例。^[172]
内华达县报告该县第一例确诊病例。^[173]此人最近出国旅游，后发现该病例是在跨际旅游时被感染的。
圣华金县报告13例新增病例。^[174]

3月17日

旧金山市县报告3例新增病例，该市县确诊病例累计达43例。^[175]
洛杉矶县报告50例新增病例，该县确诊病例累计达144例。^[176]
阿拉梅达县报告8例新增病例，该县确诊病例累计达27例。^[177]
圣克拉拉县报告17例新增病例，该县确诊病例累计达155例。^[178]
圣马特奥县报告23例新增病例，该县确诊病例累计达64例。^[179]
康特拉科斯塔县报告5例新增病例，该县确诊病例累计39例。^[180]
萨克拉门托县报告40例新增病例和两例死亡病例。^[181]
橙县报告共22例新增病例。^[182]
河滨县报告15例新增病例和3例死亡病例。^[183]
蒙特雷县宣布该县头两例新增病例。^[184]
圣路易斯-奥比斯波县报告3例新增病例，该县确诊病例累计6例。^[185]^[186]

3月18日

洛杉矶县累计确诊病例增至190例； ^[176]圣马特奥县累计确诊病例增至80例；^[187]圣迭戈县累计确诊病例增至75例；^[188]旧金山市累计确诊病例增至51例；^[175]阿拉梅达县累计确诊病例增至31例；^[177]橙县累计确诊病例增至42例；^[182]河滨县累计确诊病例增至16例；^[183]圣华金县累计确诊病例增至14例；^[174]文图拉县报告13例新增病例；^[189]门多西诺县宣布该县第一例新增病例。^[190]

3月19日

洛杉矶县累计确诊病例增至231例； ^[176]圣克拉拉县累计确诊病例增至189例；^[191]圣马特奥县累计确诊病例增至89例；^[179]旧金山市累计确诊病例增至70例；^[175]橙县累计确诊病例增至53例；^[182]萨克拉门托县累计确诊病例增至45例；^[181]康特拉科斯塔县累计确诊病例增至42例；^[180]阿拉梅达县累计确诊病例增至35例；^[177]圣华金县累计确诊病例增至15例；^[174]圣克鲁斯县累计确诊病例增至14例； ^[192]

3月20日

洛杉矶县累计确诊病例增至292例；^[176]圣克拉拉县累计确诊病例增至196例；^[191]圣迭戈县累计确诊病例增至120例；^[188]旧金山市累计确诊病例增至76例；^[175]萨克拉门托县累计确诊病例为53例及3例死亡病例；^[181]康特拉科斯塔县累计确诊病例增至46例；^[180]阿拉梅达县累计确诊病例增至45例；^[177]马林县累计确诊病例增至38例^[193]河滨县累计确诊病例增至28例；^[183]圣华金县累计确诊病例增至20例；^[174]文图拉县累计确诊病例增至17例；^[189]圣克鲁斯县累计确诊病例增至15例；^[194]圣路易斯-奥比斯波县报告累计16例确诊病例；^[195]圣塔芭芭拉报告了9例确诊病例 ^[196]圣贝尼托县报告了9例确诊病例；^[197]优洛县累计确诊病例增至6例；^[198]弗雷斯诺县报告了6例确诊病例，包括首次人传人病例。^[199]拥有全美第二大城市卫生系统洛杉矶县认为它无法控制住病毒传播的速度，就改变了检测2019冠状病毒病的指导方针，即如果检测结果呈阳性不会改变他们的治疗方法，就不再对有症状的患者进行检测。^[200]

4月1日，加州卫生局建议民众出门蒙面。各县或城跟进，洛杉矶县强制蒙面。^[201]

政府及机构反应

2月

2月10日，圣克拉拉县进入地方卫生紧急状态。在该状态下，健康官员可以对可能的冠状病毒病病例迅速反应。该紧急状态将持效30日。^[202]2月14日，圣迭戈县进入地方卫生紧急状态，以此保证该县有充足资源应对疫情。该紧急状态持效七日。^[203]

2月25日，旧金山市市长伦敦·布丽德（London Breed）宣布该市进入紧急状态，以此收集资源、招募人员、加快相关措施，预防该市出现冠状病毒病病例。^[204]^[205]2月26日，橙县进入地方卫生紧急状态，以此提高公共警觉，促进规划紧急措施。^[205]2月27日，索拉诺县进入地方卫生紧急状态，以此加强对冠状病毒病病例对反应。^[206]同日，加州州长加文·纽瑟姆称，截止至2月27日，全州已有8,400人因病毒受观察。^[207]州长纽瑟姆还说，“加州检测能力有限，只有200个试剂盒。”^[208]

3月

3月3日，在普莱瑟县出现第二例确诊病例之后，该县进入公共卫生紧急状态。^[209]3月4日，在普莱瑟县出现第一例病死于冠状病毒病的病例之后，州长纽瑟姆宣布全州进入紧急状态。^[210]^[211]^[212]

3月7日，鉴于萨克拉门托县埃尔克格罗夫的一户人家集体患冠状病毒病，^[213]，埃尔克格罗夫学区决定停学至3月13日。^[214]3月8日，里弗赛德县新增一例病例，在兰乔米拉市艾森豪威尔卫生中心治疗。该县随后进入公共卫生紧急状态。^[131]

3月9日，圣克拉拉县宣布，从3月11日起，超过1000人的公共集会将被禁止三周。^[215]3月10日，一名女子成为圣迭戈县首例疑似新型冠状病毒感染者，她正在斯克里普斯格林医院（Scripps Green Hospital）接受治疗，检测结果有待CDC的确认。感染经过与境外旅游有关；她回国后没有接受14天的隔离，这表明她回国时并不是来自“高风险”国家之一。^[140]

3月12日，州长纽瑟姆宣布超过250人的大型集会和超过10人的社交集会将被禁止至三月底。^[216]他还发布命令，允许州征用酒店和医疗设施用于治疗冠状病毒患者。^[217]^[218]^[219]^[220]。3月13日，加州大学伯克利分校宣布整个春季学期全部采用网上教学。4月份的新闻报道表明，圣克拉拉县早期积极实施的社会隔离令是3月5日开始实施的社区监督的结果。^[221]

3月14日，加州迪士尼乐园关闭。^[222]3月15日，洛杉矶自当日午夜开始，市内餐厅、酒吧及夜店全数关闭至3月31日^[223]。州长纽瑟姆呼吁65岁及以上的老年人以及因潜在疾病而处于危险中的人实行居家自我隔离。^[224]

3月16日，旧金山湾区六县健康官员宣布旧金山县，圣克拉拉县，圣马特奥县，马林县，康特拉科斯塔县和阿拉梅达县等6个县被封锁至4月7日^[225]。此行政令限制非必要的旅行和商业活动。^[226]^[227]^[228]同一天，圣克鲁兹县宣布与居家隔离类似的命令。^[229]

3月17日，更多的县发布了居家隔离的命令，包括蒙特雷县（截至4月4日）^[230]、圣贝尼托县（截至4月7日）^[231]、索诺马县（截至4月7日）^[232]。萨克拉门托县发布了一项居家指令，这不同于居家隔离的命令，其不是一个法律要求。^[233]3月18日，优洛县（至4月7日）、弗雷斯诺市（至3月31日）、纳帕县（3月20日至4月7日）、圣路易斯-奥比斯波县（至4月17日）、门多西诺县（至4月7日）发布了居家隔离的命令。国防部说，美国海军仁慈号医疗舰正准备落实在加州部署，“与可能不堪重负的社区协助进行紧急病人护理”。^[234]

3月19日，萨克拉门托县将其“居家指令”升级为一项带有法律后果的正式命令。^[235]同日，加州州长纽瑟姆发布禁足令，要求加州的4000万名居民非必须情况下不得出门^[5]。

3月21日，美国卫生与公共服务部战略国家储备司将圣克拉拉会议中心（英语：Santa Clara Convention Center）改造成联邦医疗站，以接收来自当地医院的非重症患者。^[236]

3月22日，美国总统特朗普宣布加州为疫情重大灾区^[237]。

3月30日，旧金山，圣克拉拉，圣马特奥，马林，康特拉科斯塔和阿拉梅达县等6县卫生官员宣布“就地避难”政策 (shelter-in-place) 将延长至5月3日。^[238]

4月

4月1日，加州教育部发表了一份声明，承认所有学校可能在本学年剩下的时间里关闭，并指示所有学校“尽一切努力通过远程教育加强我们的教育。”^[239]

4月7日，洛杉矶市长埃里克·加塞蒂宣布，根据最近疾控中心的建议，将自4月10日起颁布一项工人保护令，要求所有商店和重要企业的员工、顾客都要戴口罩。商家有权拒绝为不戴口罩的顾客提供服务。^[240]^[241]州长纽瑟姆宣布已达成一项协议，其将每月向加州提供超过2亿个口罩，其中包括1.5亿个N95口罩。^[242]

4月9日，州长纽瑟姆宣布，该州将为医院和其他重要工作人员支付酒店房间费用，因为他们害怕回家后感染家人。^[243]

4月13日，加州州长纽瑟姆与俄勒冈州州长凯特·布朗（英语：Katherine Brown）和华盛顿州州长杰伊·英斯利宣布了西部州协定（英语：Western States Pact），即在控制疫情的同时协调三个州恢复经济活动的协议。^[244]

4月15日，州长纽瑟姆宣布，每名无证成年人移民可获得500美元或每户家庭可获得1000美元。^[245]

4月22日，州长纽瑟姆下令对2019年12月死亡人员的尸检进行审查，以查明病毒何时蔓延至加州。^[246]

4月24日，州长纽瑟姆宣布了一项计划，将为满足该计划要求的老年居民提供免费膳食。该项目与当地餐馆合作，每天向每位符合计划要求的居民提供价值为61美元的餐食。该计划75%的费用将由联邦紧急救援署支付，其余费用将由州和地方政府支付。^[247]同日，旧金山市市长伦敦·布里德（英语：London Breed）表示，该市来自中国的个人防护用品的订单被改道运到了法国和联邦紧急救援署。她说：“我们在去旧金山的路上穿了隔离服，然后转道去了法国”。另一份设备订单通过了海关，然后被联邦应急管理局没收用于其他地方。她后来说，在疫情最严重的时候，我们仍然在谈论个人防护用品，这确实让我感到震惊。没有什么比这更令人沮丧的了。^[248]^[249]^[250]^[251]

4月29日，州长纽瑟姆宣布扩大该州的“从农场到家庭”（Farm to Family）计划，以帮助农民与食品银行建立联系。州长纽瑟姆还宣布，该州的CalFresh（英语：CalFresh）计划将继续为每个受助人提供届时5月份的最高福利。州长还表示，由于Pandemic-EBT项目，有在学校吃免费或低成本午餐的孩子的家庭现在每月最多可获得365美元的额外福利。此外，州长表示，这些福利现在可以用来在亚马逊和沃尔玛网上购买食品杂货，加州将会扩大网店数量。^[252]

5月

5月6日，州长纽瑟姆签署了一项行政命令，将拓展对所有在该州“居家隔离”令期间感染病毒的工人补偿。这一命令将追溯至当时该州在3月19日颁布了“居家隔离”令。州长还签署了一项行政命令，免除了对受疫情影响的居民和小企业征收财产税的处罚。^[253]

5月7日，州长纽瑟姆宣布，该州正在进入重启路程中的第二阶段。第二阶段会允许某些经济低风险的部分重新开放，前提只要有重大的安全措施到位。^[254]

5月8日，州长纽瑟姆签署了一项行政命令，要求向每一位登记选民邮寄一张2020年加州各项选举选票。^[255]

6月

从6月12日起，加州电影、电视和音乐制作行业开始复工^[256]。州长纽瑟姆宣布，该州正在进入四阶段重启路程中的第三阶段。第三阶段允许某些高风险企业重新开始营业，并对其进行安全和卫生措施改造，比如在餐馆、酒吧、剧院、健身房和发廊的座位容量和定期清洁。^[257]

6月18日，加州宣布，全州民众外出时在大多数室内场所以及无法保证社交距离的户外必须佩戴口罩^[258]。

6月25日，加州宣布进入预算紧急状态^[259]。

六月底，《纽约时报》注意到加州“确诊病例在以令人担忧的速度激增”，这迫使州长纽瑟姆撤销了数县重新开放的政策。^[260]

6月26日，州长纽瑟姆说，如果因皮里尔官员不重新在墨西哥边境地区强制执行“居家隔离”行政命令，他将“致力于干预”。该县在墨西哥边境地区的平均检测为阳性的个案比例高达23%，而全国平均检测为阳性的个案比例为5.7%。^[261]

6月28日，州长纽瑟姆下令关闭7个县的酒吧：洛杉矶、弗雷斯诺、克恩、圣华金、图莱里、金斯和因皮里尔。^[262]

7月

7月1日，纽森州长下令关闭康特拉科斯塔、弗雷斯诺、格伦、因皮里尔、克恩、金斯、洛杉矶、默塞德、橙县、河滨、萨克拉门托、圣贝纳迪诺、圣华金、圣巴巴拉、圣克拉拉、索拉诺、斯坦尼斯劳斯、图莱里和文图拉县的大多数室内企业，包括餐馆、酿酒厂和电影院。^[263]

7月13日，由于疫情出现反弹，州长纽瑟姆再次下令加州大部分地区的民众呆在家中，并下令关闭州内的酒吧、餐厅、电影院等^[264]。

11月

11月19日，加利福尼亚州州长加文·纽瑟姆宣布在加州绝大多数地区实行“宵禁令”^[265]。

12月

12月6日23时59分起，加州南部以及加州中部部分地区开始实施居家令^[266]。

2021年6月

6月15日，加利福尼亚州宣布完全解封，重启经济。截至当天，加利福尼亚州70%的成年人至少接种过一剂COVID-19疫苗^[267]。

2021年12月

12月15日，由于加利福尼亚州新冠病毒确诊病例数有所增加，该州重新开始实施在封闭区域戴口罩的规定。^[268]

影响

对监狱的影响

圣迭戈县：3月16日，圣迭戈县治安部门表示，他们已经开始缩减被收押进县七所监狱的人数，并批准提前释放一些囚犯。其他措施包括在牢房内提供伙食，暂停探访，以及暂停监狱项目。^[269]
阿拉米达县：3月20日，阿拉米达县官员宣布，将有247人从都柏林的圣丽塔监狱获释。^[270]

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[jump_14Mar-16] 2020年3月14日, 加州公共卫生署由原先报告截至上午8时的病例更改为下午6时。由于报告间隔时间超过24小时(如34小时)，因此可能会报告更多病例。

[jump_20Mar-17] 2020年3月20日，加州公共卫生署开始由报告截至下午6时的病例更改为下午2点。由于报告间隔时间短于24小时（如20小时），因此可能会报告较少的病例。

[jump_29Mar-18] 加州公共卫生署在2020年3月28日没有报告数据。因此，在2020年3月29日，报告间隔为2天（或48小时）。

[stoptime-19] 2020年3月30日，加州公共卫生署停止报告统计数据的确切时间。

[20] 已被申报确诊的病例；实际的病例数可能更高；不包括被遣返回国的病例；

[21] “–”代表数据缺失，并不代表0病例。

[24] 其中517例确诊病例来自在橙县监狱服刑的囚犯。

[31] 包括没有被阿拉梅达县公共卫生署统计在内的伯克利市的数据

[42] 其中1,019例确诊病例来自隆波克联邦监狱。

[43] 其中3例死亡病例来自隆波克联邦监狱。

[44] 其中1,016例康复病例来自隆波克联邦监狱。

[49] 其中1,937例确诊病例来自金斯县三个联邦监狱。

[50] 其中6例死亡病例来自金斯县三个联邦监狱。

[51] 其中1,172例康复病例来自金斯县三个联邦监狱。

[66] 其中625例确诊病例来自拉森县三座监狱。

[67] 其中566例康复病例来自拉森县三座监狱。

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