Covid-19 Live

Covid-19 Live is an interactive dashboard with simplified data updated every 10 minutes. All you need to know about Covid-19 spread, symptoms and best practices, sourced from the WHO and data from John Hopkins University

Total Cases Worldwide

Worldwide

Cases
11,312,141
+129,565 (24h)
Deaths
531,257
+2,885 (24h)
Recovered
6,210,843
54.9%
Active
4,570,041
40.4%

Country with Most Cases: USA

Coronavirus
Covid-19
USA World
+39,653 (24h)
2,930,241
Confirmed
0
+216 (24h)
132,280
Deaths
0
42.86%
1,255,907
Recovered
0
52.63%
1,542,054
Active
+129,565 (24h)
11,312,141
Confirmed
0
+2,885 (24h)
531,257
Deaths
0
56.72%
6,416,692
Recovered
0
38.58%
4,364,192
Active

Country with Most Cases: Visualizer

Covid-19 Progress Curve

World History Chart

Search by Country: 24hr Updates

Country Cases 24h Deaths 24h % Recovered % Active Tests
United States 2,930,241 39,653 132,280 216 4.5% 1,255,907 42.9% 1,542,054 36,867,654
Brazil 1,550,176 6,835 63,409 155 4.1% 978,615 63.1% 508,152 3,330,562
Russia 674,515 6,632 10,027 168 1.5% 446,879 66.3% 217,609 20,451,110
India 673,904 24,015 19,279 610 2.9% 408,646 60.6% 245,979 9,540,132
Spain 297,625 0 28,385 0 9.5% 269,240 5,448,984
Peru 295,599 0 10,226 0 3.5% 185,852 62.9% 99,521 1,740,969
Chile 291,847 3,758 6,192 141 2.1% 257,445 88.2% 28,210 1,163,880
United Kingdom 284,900 624 44,198 67 15.5% 240,702 10,340,511
Mexico 245,251 6,740 29,843 654 12.2% 147,205 60% 68,203 624,987
Italy 241,419 235 34,854 21 14.4% 191,944 79.5% 14,621 5,600,826
Iran 237,878 2,449 11,408 148 4.8% 198,949 83.6% 27,521 1,744,958
Pakistan 225,283 3,387 4,619 68 2.1% 125,094 55.5% 95,570 1,372,825
Saudi Arabia 205,929 4,128 1,858 56 0.9% 143,256 69.6% 60,815 1,823,763
Turkey 204,610 1,154 5,206 20 2.5% 179,492 87.7% 19,912 3,584,066
Germany 197,250 250 9,074 1 4.6% 181,300 91.9% 6,876 5,873,563
South Africa 177,124 0 2,952 0 1.7% 86,298 48.7% 87,874 1,745,153
France 166,960 0 29,893 0 17.9% 77,060 46.2% 60,007 1,384,633
Bangladesh 159,679 3,288 1,997 29 1.3% 70,721 44.3% 86,961 835,074
Colombia 109,505 0 3,777 0 3.4% 45,334 41.4% 60,394 818,703
Canada 105,211 120 8,668 5 8.2% 68,868 65.5% 27,675 2,885,746
Qatar 99,183 530 123 2 0.1% 90,387 91.1% 8,673 376,881
China 83,545 3 4,634 0 5.5% 78,509 94% 402 90,410,000
Egypt 74,035 1,324 3,280 79 4.4% 20,103 27.2% 50,652 135,000
Argentina 72,786 0 1,453 16 2% 25,930 35.6% 45,403 390,382
Sweden 71,419 0 5,420 0 7.6% 65,999 519,113
Belarus 63,270 273 418 6 0.7% 50,669 80.1% 12,183 1,059,299
Indonesia 62,142 1,447 3,089 53 5% 28,219 45.4% 30,834 894,428
Belgium 61,838 111 9,771 6 15.8% 17,091 27.6% 34,976 1,284,605
Ecuador 60,657 0 4,700 0 7.7% 28,391 46.8% 27,566 158,730
Iraq 58,354 2,334 2,368 106 4.1% 31,077 53.3% 24,909 589,377
United Arab Emirates 50,857 716 321 3 0.6% 39,857 78.4% 10,679 3,500,000
Netherlands 50,335 0 6,113 0 12.1% 44,222 616,376
Kuwait 49,303 631 365 5 0.7% 39,943 81% 8,995 402,941
Ukraine 47,677 914 1,227 15 2.6% 21,115 44.3% 25,335 705,836
Kazakhstan 45,719 1,644 188 0 0.4% 26,750 58.5% 18,781 1,590,144
Oman 45,106 1,177 203 10 0.5% 26,968 59.8% 17,935 202,837
Singapore 44,664 185 26 0 0.1% 40,117 89.8% 4,521 757,746
Portugal 43,659 503 1,605 7 3.7% 28,772 65.9% 13,282 1,205,593
Philippines 41,830 1,494 1,290 10 3.1% 11,453 27.4% 29,087 798,476
Bolivia 36,818 1,290 1,320 49 3.6% 10,766 29.2% 24,732 81,786
Dominican Republic 36,184 1,036 786 11 2.2% 18,602 51.4% 16,796 163,727
Panama 35,995 0 698 0 1.9% 16,945 47.1% 18,352 138,081
Poland 35,719 314 1,512 5 4.2% 23,127 64.7% 11,080 1,620,160
Afghanistan 32,672 348 826 7 2.5% 19,164 58.7% 12,682 75,155
Switzerland 32,198 97 1,965 0 6.1% 29,200 90.7% 1,033 624,396
Israel 29,170 1,115 330 4 1.1% 17,816 61.1% 11,024 1,069,963
Romania 28,582 416 1,731 23 6.1% 19,854 69.5% 6,997 759,037
Bahrain 28,410 0 96 1 0.3% 23,318 82.1% 4,996 584,070
Armenia 27,900 580 477 8 1.7% 15,935 57.1% 11,488 120,245
Nigeria 27,564 0 628 0 2.3% 11,069 40.2% 15,867 144,833
Ireland 25,509 11 1,741 1 6.8% 23,364 91.6% 404 454,216
Honduras 22,116 996 605 14 2.7% 2,250 10.2% 19,261 49,308
Guatemala 21,293 0 880 0 4.1% 3,315 15.6% 17,098 64,590
Azerbaijan 19,801 534 241 6 1.2% 11,291 57% 8,269 509,811
Ghana 19,388 0 117 0 0.6% 14,330 73.9% 4,941 307,133
Japan 19,068 0 976 0 5.1% 16,866 88.5% 1,226 481,877
Austria 18,165 115 705 0 3.9% 16,607 91.4% 853 642,679
Moldova 17,672 227 580 8 3.3% 10,396 58.8% 6,696 101,180
Serbia 15,829 325 306 8 1.9% 13,064 82.5% 2,459 434,415
Algeria 15,500 430 946 9 6.1% 11,181 72.1% 3,373
Nepal 15,491 232 34 2 0.2% 6,415 41.4% 9,042 547,876
Morocco 13,822 534 232 2 1.7% 9,329 67.5% 4,261 748,449
South Korea 13,030 63 283 1 2.2% 11,811 90.6% 936 1,319,523
Denmark 12,832 0 606 0 4.7% 11,817 92.1% 409 1,106,377
Cameroon 12,592 0 313 0 2.5% 10,100 80.2% 2,179
Czechia 12,372 53 353 0 2.9% 7,851 63.5% 4,168 565,122
Côte d’Ivoire 10,462 218 72 2 0.7% 4,807 45.9% 5,583 62,205
Uzbekistan 9,708 312 31 2 0.3% 6,425 66.2% 3,252 1,121,236
Sudan 9,663 0 604 0 6.3% 4,624 47.9% 4,435 401
Norway 8,926 5 251 0 2.8% 8,138 91.2% 537 348,208
Malaysia 8,658 10 121 0 1.4% 8,461 97.7% 76 797,796
Australia 8,362 107 104 0 1.2% 7,355 88% 903 2,667,064
Kenya 7,577 389 159 5 2.1% 2,236 29.5% 5,182 185,035
El Salvador 7,507 240 210 8 2.8% 4,434 59.1% 2,863 172,455
Congo - Kinshasa 7,379 68 182 3 2.5% 2,961 40.1% 4,236
Senegal 7,272 108 129 4 1.8% 4,713 64.8% 2,430 82,857
Finland 7,248 6 329 0 4.5% 6,700 92.4% 219 251,600
Kyrgyzstan 7,094 327 78 2 1.1% 2,714 38.3% 4,302 228,857
North Macedonia 6,932 145 334 6 4.8% 2,987 43.1% 3,611 66,133
Venezuela 6,537 0 59 0 0.9% 2,100 32.1% 4,378 1,297,586
Haiti 6,230 129 110 0 1.8% 1,286 20.6% 4,834 12,435
Tajikistan 6,159 101 52 0 0.8% 4,809 78.1% 1,298
Ethiopia 5,846 0 103 0 1.8% 2,430 41.6% 3,313 250,604
Gabon 5,620 0 44 0 0.8% 2,555 45.5% 3,021 39,668
Guinea 5,521 0 33 0 0.6% 4,446 80.5% 1,042 14,407
Bulgaria 5,497 0 239 0 4.3% 2,892 52.6% 2,366 150,062
Bosnia & Herzegovina 4,962 0 191 0 3.8% 2,550 51.4% 2,221 97,736
French Guiana 4,913 355 16 0 0.3% 1,866 38% 3,031 8,707
Djibouti 4,736 0 55 0 1.2% 4,580 96.7% 101 47,491
Mauritania 4,705 0 129 0 2.7% 1,765 37.5% 2,811 13,842
Costa Rica 4,621 310 18 0 0.4% 1,721 37.2% 2,882 44,917
Luxembourg 4,476 29 110 0 2.5% 4,016 89.7% 350 219,471
Hungary 4,174 2 589 1 14.1% 2,784 66.7% 801 281,628
Central African Republic 3,918 0 48 0 1.2% 859 21.9% 3,011 25,031
Palestinian Territories 3,835 501 12 1 0.3% 463 12.1% 3,360 84,621
Greece 3,511 25 192 0 5.5% 1,374 39.1% 1,945 331,703
Thailand 3,185 5 58 0 1.8% 3,066 96.3% 61 603,657
Croatia 3,094 86 113 1 3.7% 2,183 70.6% 798 84,166
Equatorial Guinea 3,071 0 51 0 1.7% 842 27.4% 2,178 16,000
Somalia 2,961 17 92 2 3.1% 973 32.9% 1,896
Albania 2,819 67 74 2 2.6% 1,637 58.1% 1,108 24,601
Madagascar 2,728 216 29 3 1.1% 1,078 39.5% 1,621 23,244
Mayotte 2,661 0 35 0 1.3% 2,375 89.3% 251 8,800
Nicaragua 2,519 0 83 0 3.3% 1,238 49.1% 1,198
Maldives 2,435 25 10 0 0.4% 1,976 81.1% 449 53,867
Paraguay 2,385 36 20 1 0.8% 1,134 47.5% 1,231 76,077
Cuba 2,369 8 86 0 3.6% 2,227 94% 56 180,697
Mali 2,303 18 118 1 5.1% 1,516 65.8% 669 12,807
Sri Lanka 2,074 5 11 0 0.5% 1,885 90.9% 178 110,505
South Sudan 2,021 0 38 0 1.9% 333 16.5% 1,650 10,824
Estonia 1,993 2 69 0 3.5% 1,870 93.8% 54 108,801
Iceland 1,855 0 10 0 0.5% 1,832 98.8% 13 74,424
Lebanon 1,855 25 35 0 1.9% 1,304 70.3% 516 144,418
Lithuania 1,831 3 79 0 4.3% 1,545 84.4% 207 440,453
Guinea-Bissau 1,765 0 25 0 1.4% 676 38.3% 1,064 1,500
Slovakia 1,749 29 28 0 1.6% 1,466 83.8% 255 217,538
Slovenia 1,679 29 111 0 6.6% 1,384 82.4% 184 105,652
Zambia 1,632 0 30 0 1.8% 1,348 82.6% 254 56,825
Congo - Brazzaville 1,557 0 44 0 2.8% 501 32.2% 1,012
Sierra Leone 1,533 9 62 0 4% 1,051 68.6% 420
New Zealand 1,530 0 22 0 1.4% 1,490 97.4% 18 411,932
Malawi 1,498 0 16 0 1.1% 317 21.2% 1,165 15,724
Cape Verde 1,421 39 16 1 1.1% 654 46% 751 39,257
Hong Kong SAR China 1,259 11 7 0 0.6% 1,145 90.9% 107 347,400
Yemen 1,248 8 337 2 27% 537 43% 374 120
Benin 1,199 0 21 0 1.8% 333 27.8% 845 56,613
Tunisia 1,186 5 50 0 4.2% 1,046 88.2% 90 71,689
Jordan 1,150 3 10 0 0.9% 902 78.4% 238 415,385
Latvia 1,123 1 30 0 2.7% 1,000 89% 93 156,784
Rwanda 1,092 11 3 0 0.3% 523 47.9% 566 157,271
Niger 1,082 0 68 0 6.3% 963 89% 51 6,547
Cyprus 1,002 3 19 0 1.9% 839 83.7% 144 163,499
Burkina Faso 980 0 53 0 5.4% 854 87.1% 73
Mozambique 969 30 7 1 0.7% 256 26.4% 706 32,498
Eswatini 954 45 13 0 1.4% 535 56.1% 406 11,872
Uruguay 952 0 28 0 2.9% 837 87.9% 87 69,570
Georgia 948 5 15 0 1.6% 825 87% 108 120,336
Uganda 927 16 0 0 0% 868 93.6% 59 205,312
Libya 918 0 27 0 2.9% 230 25.1% 661 29,175
Chad 871 0 74 0 8.5% 787 90.4% 10
Liberia 869 36 37 0 4.3% 369 42.5% 463
Andorra 855 0 52 0 6.1% 800 93.6% 3 3,750
Jamaica 721 6 10 0 1.4% 565 78.4% 146 25,750
Montenegro 720 57 13 0 1.8% 315 43.8% 392 13,820
São Tomé & Príncipe 719 0 13 0 1.8% 267 37.1% 439 1,833
Diamond Princess 712 0 13 0 1.8% 651 91.4% 48
San Marino 698 0 42 0 6% 656 94% 0 5,729
Malta 672 0 9 0 1.3% 650 96.7% 13 99,126
Togo 671 0 14 0 2.1% 424 63.2% 233 32,267
Zimbabwe 625 0 7 0 1.1% 176 28.2% 442 75,485
Jersey 571 0 47 0 8.2% 512 89.7% 12 21,388
Suriname 565 4 14 1 2.5% 276 48.8% 275 1,244
Réunion 533 0 2 0 0.4% 472 88.6% 59 35,419
Tanzania 509 0 21 0 4.1% 183 36% 305
Taiwan 449 0 7 0 1.6% 438 97.6% 4 77,157
Namibia 375 25 0 0 0% 25 6.7% 350 10,682
Vietnam 355 0 0 0 0% 340 95.8% 15 275,000
Mauritius 341 0 10 0 2.9% 330 96.8% 1 186,845
Syria 338 10 10 0 3% 123 36.4% 205
Isle of Man 336 0 24 0 7.1% 312 92.9% 0 6,558
Angola 328 0 18 0 5.5% 107 32.6% 203 10,000
Myanmar (Burma) 313 7 6 0 1.9% 240 76.7% 67 81,977
Comoros 309 0 7 0 2.3% 241 78% 61
Botswana 277 0 1 0 0.4% 29 10.5% 247 45,440
Guyana 256 0 14 0 5.5% 117 45.7% 125 2,711
Martinique 249 0 14 0 5.6% 98 39.4% 137
Mongolia 220 0 0 0 0% 183 83.2% 37 23,991
Eritrea 215 0 0 0 0% 56 26% 159
Cayman Islands 201 0 1 0 0.5% 194 96.5% 6 24,321
Burundi 191 0 1 0 0.5% 118 61.8% 72 749
Faroe Islands 187 0 0 0 0% 187 100% 0 15,395
Guadeloupe 184 0 14 0 7.6% 157 85.3% 13 9,649
Gibraltar 178 0 0 0 0% 176 98.9% 2 14,119
Bermuda 146 0 9 0 6.2% 137 93.8% 0 11,908
Brunei 141 0 3 0 2.1% 138 97.9% 0 29,841
Cambodia 141 0 0 0 0% 131 92.9% 10 38,335
Trinidad & Tobago 130 0 8 0 6.2% 115 88.5% 7 5,338
Monaco 106 0 4 0 3.8% 95 89.6% 7 16,200
Aruba 105 1 3 0 2.9% 98 93.3% 4 2,575
Bahamas 104 0 11 0 10.6% 89 85.6% 4 2,436
Barbados 97 0 7 0 7.2% 90 92.8% 0 8,120
Liechtenstein 83 0 1 0 1.2% 81 97.6% 1 900
Seychelles 81 0 0 0 0% 11 13.6% 70
Bhutan 78 1 0 0 0% 51 65.4% 27 25,456
Sint Maarten 78 1 15 0 19.2% 63 80.8% 0 500
Antigua & Barbuda 68 0 3 0 4.4% 23 33.8% 42 796
French Polynesia 62 0 0 0 0% 60 96.8% 2 4,649
Gambia 55 0 2 0 3.6% 27 49.1% 26 3,005
Macao SAR China 46 0 0 0 0% 45 97.8% 1 4,071
Turks & Caicos Islands 45 1 2 0 4.4% 11 24.4% 32 690
St. Martin 43 0 3 0 7% 37 86% 3 851
Lesotho 35 0 0 0 0% 11 31.4% 24 3,000
Belize 30 2 2 0 6.7% 19 63.3% 9 2,358
St. Vincent & Grenadines 29 0 0 0 0% 29 100% 0 844
Timor-Leste 24 0 0 0 0% 24 100% 0 1,568
Curaçao 23 0 1 0 4.3% 19 82.6% 3 1,080
Grenada 23 0 0 0 0% 23 100% 0 5,465
St. Lucia 22 0 0 0 0% 19 86.4% 3 1,815
New Caledonia 21 0 0 0 0% 21 100% 0 8,610
Laos 19 0 0 0 0% 19 100% 0 17,089
Dominica 18 0 0 0 0% 18 100% 0 623
Fiji 18 0 0 0 0% 18 100% 0 4,000
St. Kitts & Nevis 15 0 0 0 0% 15 100% 0 480
Falkland Islands 13 0 0 0 0% 13 100% 0 1,197
Greenland 13 0 0 0 0% 13 100% 0 3,954
Vatican City 12 0 0 0 0% 12 100% 0
Montserrat 11 0 1 0 9.1% 10 90.9% 0 61
Papua New Guinea 11 0 0 0 0% 8 72.7% 3 7,147
Western Sahara 10 0 1 0 10% 8 80% 1
MS Zaandam 9 0 2 0 22.2% 7
British Virgin Islands 8 0 1 0 12.5% 7 87.5% 0 439
Caribbean Netherlands 7 0 0 0 0% 7 100% 0 424
St. Barthélemy 6 0 0 0 0% 6 100% 0 152
Anguilla 3 0 0 0 0% 3 100% 0 272
St. Pierre & Miquelon 1 0 0 0 0% 1 100% 0

Live Covid-19
United States 2,930,241
Cases: 2,930,241
Deaths: 132,280
Recovered: 1,255,907
Active: 1,542,054
Brazil 1,550,176
Cases: 1,550,176
Deaths: 63,409
Recovered: 978,615
Active: 508,152
Russia 674,515
Cases: 674,515
Deaths: 10,027
Recovered: 446,879
Active: 217,609
India 673,904
Cases: 673,904
Deaths: 19,279
Recovered: 408,646
Active: 245,979
Spain 297,625
Cases: 297,625
Deaths: 28,385
Recovered:
Active: 269,240
Peru 295,599
Cases: 295,599
Deaths: 10,226
Recovered: 185,852
Active: 99,521
Chile 291,847
Cases: 291,847
Deaths: 6,192
Recovered: 257,445
Active: 28,210
United Kingdom 284,900
Cases: 284,900
Deaths: 44,198
Recovered:
Active: 240,702
Mexico 245,251
Cases: 245,251
Deaths: 29,843
Recovered: 147,205
Active: 68,203
Italy 241,419
Cases: 241,419
Deaths: 34,854
Recovered: 191,944
Active: 14,621
Iran 237,878
Cases: 237,878
Deaths: 11,408
Recovered: 198,949
Active: 27,521
Pakistan 225,283
Cases: 225,283
Deaths: 4,619
Recovered: 125,094
Active: 95,570
Saudi Arabia 205,929
Cases: 205,929
Deaths: 1,858
Recovered: 143,256
Active: 60,815
Turkey 204,610
Cases: 204,610
Deaths: 5,206
Recovered: 179,492
Active: 19,912
Germany 197,250
Cases: 197,250
Deaths: 9,074
Recovered: 181,300
Active: 6,876
South Africa 177,124
Cases: 177,124
Deaths: 2,952
Recovered: 86,298
Active: 87,874
France 166,960
Cases: 166,960
Deaths: 29,893
Recovered: 77,060
Active: 60,007
Bangladesh 159,679
Cases: 159,679
Deaths: 1,997
Recovered: 70,721
Active: 86,961
Colombia 109,505
Cases: 109,505
Deaths: 3,777
Recovered: 45,334
Active: 60,394
Canada 105,211
Cases: 105,211
Deaths: 8,668
Recovered: 68,868
Active: 27,675
Qatar 99,183
Cases: 99,183
Deaths: 123
Recovered: 90,387
Active: 8,673
China 83,545
Cases: 83,545
Deaths: 4,634
Recovered: 78,509
Active: 402
Egypt 74,035
Cases: 74,035
Deaths: 3,280
Recovered: 20,103
Active: 50,652
Argentina 72,786
Cases: 72,786
Deaths: 1,453
Recovered: 25,930
Active: 45,403
Sweden 71,419
Cases: 71,419
Deaths: 5,420
Recovered:
Active: 65,999
Belarus 63,270
Cases: 63,270
Deaths: 418
Recovered: 50,669
Active: 12,183
Indonesia 62,142
Cases: 62,142
Deaths: 3,089
Recovered: 28,219
Active: 30,834
Belgium 61,838
Cases: 61,838
Deaths: 9,771
Recovered: 17,091
Active: 34,976
Ecuador 60,657
Cases: 60,657
Deaths: 4,700
Recovered: 28,391
Active: 27,566
Iraq 58,354
Cases: 58,354
Deaths: 2,368
Recovered: 31,077
Active: 24,909

 

Coronavirus Disease 2019 – Covid-19 Wiki

In december 2019, the first case of Covid-19 in Wuhan, China, was reported to the WHO. On the 30th of January the epidemic was declared a public health emergency. The disease’s name is Covid-19 (Coronavirus Disease 2019) and is caused by the SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) virus. As of April 24th 2020, 2.6 million people have been infected by the virus.

 

What is Coronavirus?

Coronaviruses are a family of viruses, which include SARS-CoV-1 (epidemic in 2000s) and MERS-CoV. Although it does include some pretty bad epidemic causing viruses, until now, most of them that had contact with humans caused mild colds and coughing.

This is why they weren’t very much investigated and we were taken by surprise. This type of virus is mostly found in other animals than humans, and SARS-CoV-2 most probably came from bats. Many sources agree that it is very unlikely this virus was created or modified in a lab, including WHO.

 

Covid-19
 

How Covid-19 Spread Across the Globe

One of the reasons why this virus spread at such a wide scale compared to the two other epidemics could be, according to ebmedicine, that the epidemic happened during the Chinese New Year.

This means that there were 15 million tourists in Wuhan that came from many places across the globe, and possibly brought it back home with them.
The epidemic first arose in eastern Asia, and struck China quite severely. The most affected region then became Europe, and now the United States has the most cases and deaths.

The affected countries reacted more or less rapidly, and tried to handle the crisis as best as they could. Indeed, the necessary equipment to handle the situation, be it masks, alcohol-based gels, or ventilators to help patients breathe have not been enough.

Many hospitals reach maximum capacity and become forced to choose between two patients when the situation wasn’t controlled properly. The virus is pretty infectious, and the fact that we know little about it makes it hard to determine if an optimal solution exists.

 

Transmission Speed of Covid-19

Covid-19 is mostly transmitted through droplets, or objects (objects that transmit diseases are called fomites) that came in contact with it. It has the ability to survive thirteen hours on plastic and nearly ten hours on steel. This means that contaminated surfaces such as handrails or simple objects can be vectors to the virus.

This is why we hear a lot about washing our hands and not touching our face when we are out. Indeed, a simple contact of the virus with your mucous membranes is enough to catch it. It is not easy to determine who is infected or not, as not everyone shows symptoms.

However, being asymptomatic doesn’t mean that the pathogen cannot be passed on. An important tool that was established by scientists to be able to measure how infectious the disease is, is the reproduction rate “R”. This number represents how many new cases will exist for every one case.

Let’s take this virus for example, it is estimated that its basic reproduction rate, so when zero measures are taken to prevent the spread, is around 2.5. This means that every infected person will contaminate 2.5 people. To illustrate this here is an image of what a transmission rate of 3 would look like.

Covid-19-spread-illustration

Some of you may have noticed that at each step, the number of contaminations is multiplied by three. So according on which level of the tree you are, the first person being level 0, the number of contaminated people will be 3 to the power of the level. For example, let’s say I moved to the 5th level in my reproduction chain, I will have 35 = 243 people contaminated.

This is what we call exponential growth. A reproductive rate lower than 1 means that the virus is disappearing. The reproductive rate can determine how fast an epidemic will spread. However, it can be lowered through measures, such as social distancing, washing your hands, etc.

 

What are Covid-19 Preventive Measures

Whenever these measures are mentioned, the idea of “flattening the curve is too. What do they mean by this? The idea of flattening the curve, means reducing the number of patients at once so that they can be handled by the healthcare system. A “curve” is more or less flat, mostly according to the transmission rate, that can be modified thanks to the aforementioned measures.

These are the measures WHO recommends taking:

  • Social distancing allows to reduce human interaction and restrain the infectious rate of the viruses.
  • Washing your hands prevents the transmission through touching objects or people that are contaminated, and then catching the virus yourself.
  • Coughing or sneezing in your elbows (hands touch many more things) to avoid projecting droplets and contaminating those nearby.
  • Reduce on your own your mobility, the more interaction there is, the higher the reproduction rate.

Finally, if you experience any symptoms, it is important to declare them to your healthcare provider, so that they can advise you on the precautionary measures to take to protect others and yourself.

 

Must I test for Covid-19?

We heard a lot about testing, and maybe some of you wonder why it is so important to be able to test everyone.

Testing allows us to identify the number of contaminations, or to be certain whether the patient is sick or not.

Not everyone shows symptoms and there is a limited stock of tests. It is therefore hard to control the real propagation of the virus, as the asymptomatic people can still contaminate others.

A study conducted on board the Princess Diamond, a ship that was quarantined because it carried the virus, showed that nearly half of the contaminated population was asymptomatic.

It is impossible to determine  who carries covid-19 or not unless we introduce systematic testing. This would allow some control over the situation, but meanwhile, it is better we stay at home.

Knowing who exactly got sick can also allow more accurate statistics such as the mortality rate, that are key to understanding how this pandemic works.

 

Covid-19 Symptoms

According to WHO, the most common symptoms are fever, dry cough and tiredness. In some cases nasal congestion, sore throat and diarrhea can be present.

The symptoms are usually mild and gradual. It is important to know that most people recover from the disease without needing to go to the hospital. Stay alert, but do not panic.

Everyone can catch the virus and transmit it to others. Although younger people have less mortality rate, it does not mean they are immune to it, nor that they are certain that their case will be light. Many are hospitalized and a portion of those can end up in intensive care.

 

How Coronavirus works – The Sciency Bit

The Virus has a surface protein that is called spike glycoprotein (or S-protein). This is what allows it to attach itself to the cells in our body.

However, before adhering to our cells, S-proteins need to be primed, which happens with the help of another protein: TMPRSS2. S-protein will bind itself with another protein on the surface of our cells, called ACE2 receptor.

The latter is mostly found on alveolic cells, the ones that allow the gas exchange in your lungs. An endocytosis then happens, the virus is “swallowed” by our cells without being destroyed. Once inside the cell, the virus will use the cell’s mechanisms to reproduce itself.

 

How our Immune System Fights Covid-19

The symptoms we experience are a result of our body doing its best to defend itself. Once a stranger is detected by our immunitary cells, there will be an immediate reaction to stop it and fight it.

Some of our immune cells release cytokines, a chemical substance, which orchestrate and recruit more cells on the infected spot. In many cases, our body does well, and we get progressively better, until we’re cured.

However, in some cases the body goes overboard, and more cytokine than needed is produced. This leads to hyperinflammation, where there are too many cells fighting the virus, and can cause pneumonia. This phenomenon is called a cytokine storm.

 

Any Vaccines yet?

Research for an effective Covid-19 treatment or vaccine is still ongoing, however there starts to be promising solutions.

It takes time to establish a treatment, as they have to be studied at different scales (lab, humans, and clinical) and be approved by peers before even being commercialised.

There are many controversies surrounding certain studies, and it is important when you come across news of a “miracle cure” to look at other sources. Indeed, the success of the experiment can be more or less reliable according to the number of people it was tested on, as well as how random the selection was.

There is also a lot of discussion on the risk/benefit balance, as it would be unfortunate to end up harming people more than curing them.

According to Nature, two molecules called remdesivir and chloroquine are promising leads to treatments for this disease. Remdesivir works by inserting a code into virus’ RNA (the equivalent to our DNA, which codes basically its whole life), and provokes early termination of the virus.

It seems like it also prevents the infection of our cells. Chloroquine, on the other hand, blocks virus/cell fusion by creating conditions that inhibit it.

There exists a variant of chloroquine, called hydroxychloroquine which is less toxic, and therefore is favoured over chloroquine.

However they have not been approved yet, and could very well fail the clinical trial. This information was true on April 25th 2020, but it may very well have evolved since then.

The development of a vaccine could potentially take long months, if not years, especially because there exists no vaccine for coronaviruses yet.

Different kinds of vaccines are being looked into, but even if a promising lead is found, there is a long testing phase to make sure it is actually safe to use on humans.

There also needs to be prepping for mass production of the vaccine, if the virus is still active when it is found, and finally the process of inoculating everyone can take time.

The vaccines will probably not come in time for this wave of the epidemic, however, they might be useful if there are other ones.

 

Economic Impact of Covid-19

The Covid-19 pandemic has strongly impacted many huge companies, there are millions of people whose jobs are at risk. It goes without saying that this pandemic will take a very heavy toll on the world’s economy.

Tourism died down as travel bans took place, and many airlines lost a lot of money. Oil’s price has plummeted, and the stock market is experiencing hard times.

Covid-19-impact-on-economy
According to UN Secretary General, Antonio Guterres, the pandemic “attacked the real economy at its core, trades, supply chain, businesses, jobs, entire countries and cities are on lock-down, while borders are closing.”

On the other hand, online services such as video calls, or entertainment platforms have grown significantly, and nitrogen dioxide levels in the air have significantly dropped, improving overall air quality.

 

Environmental Impact of Covid-19

Undoubtedly, the world we used to know and inhibit has completely changed in a matter of weeks, or maybe months.

The arrival and the rapid spread of Covid-19, a global health pandemic, has led to hundreds and thousands of people losing their invaluable lives and has left the others in worrying about their jobs, mental health and future.

As production and consumption activities come to a halt, business houses and corporates are looking at the uncertain times ahead with fear and anxiety. Similarly, the zoo animals are getting sick and going wild at some places.

Natural ecosystems are facing the risk of illegal deforestation, illegal harvesting, encroachment and wildlife hunting. Full article “Earth Day 2020: The effect COVID-19 has had on Earth’s Environmental Crisis“.

 

What Happens Next: Post Covid-19

The future is very uncertain for now, but many measures are being taken by the WHO to help the crisis as much as possible.

They have recently created a knowledge hub that offers multidisciplinary information on Covid-19 for a variety of audiences from policy makers, to responders, to researchers, to educators, to affected communities and the general public.

This should allow more progress to be made by uniting efforts and giving knowledge where it is needed. On the 24th of April 2020, WHO has launched another global collaboration to accelerate the development and production of essential health technologies (including vaccines).

Initiative like this will allow a more efficient fight against the virus.
Countries will have to lift the lockdown at some point, and their economy won’t be able to handle it for an indeterminate amount of time.

However it is hard to predict whether the virus will have disappeared by then. There might be second waves, or other epidemics in the future. One thing is certain, many measures will be taken to prevent another crisis like this.

The world is growing more interconnected, which makes us more vulnerable to quicker epidemics. The origin of epidemics is researched upon, and might very well be linked to how we handle other species.

To stay informed, I encourage you to check WHO’s website, and their press conferences. Also visit our Covid-19 Live Tracker, to see an interactive visual representation of the cases as the situation evolves and research.

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