SARS-CoV-2

Bach khoa toan th? m? Wikipedia
SARS-CoV-2
Một bức ảnh hiển vi điện tử truyền qua của những phần tử virus SARS-CoV-2
M?t b?c ?nh hi?n vi đi?n t? truy?n qua c?a nh?ng ph?n t? virus SARS-CoV-2
Ảnh minh họa một phần tử virus SARS-CoV-2
?nh minh h?a m?t ph?n t? virus SARS-CoV-2 [1]
Phan lo?i virus e
(kph) : Virus
Realm: Riboviria
Nganh: incertae sedis
B?: Nidovirales
H?: Coronaviridae
Chi: Betacoronavirus
Phan chi: Sarbecovirus
Loai:
Strain:
' SARS-CoV-2'
Bi?n ch?ng
  • bi?n ch?ng 501.V2
  • bi?n ch?ng Cluster 5
  • bi?n ch?ng VOC 202012/01 (B.1.1.7)
SARS-CoV-2 trên bản đồ Trung Quốc
SARS-CoV-2
V? Han , Trung Qu?c , n?i bung phat d?ch đ?u tien đa đ??c ghi nh?n
Cac đ?ng ngh?a

Virus corona gay h?i ch?ng ho h?p c?p tinh n?ng 2 , vi?t t?t SARS-CoV-2 ( ti?ng Anh : Severe acute respiratory syndrome corona virus 2 ), [4] [a] tr??c đay co ten la virus corona m?i 2019 ( 2019-nCoV ) va c?ng đ??c g?i la virus corona ? ng??i 2019 ( HCoV-19 ho?c hCoV-19 ), la m?t ch?ng coronavirus gay ra b?nh viem đ??ng ho h?p c?p do virus corona 2019 ( COVID-19 ), [5] xu?t hi?n l?n đ?u tien vao thang 12 n?m 2019, trong đ?t bung phat đ?i d?ch COVID-19 ? thanh ph? V? Han , Trung Qu?c va b?t đ?u lay lan nhanh chong, sau đo tr? thanh m?t đ?i d?ch toan c?u. Vao ngay 12 thang 1 n?m 2020, no đ??c T? ch?c Y t? Th? gi?i g?i ten la 2019-nCoV, d?a tren m?t ph??ng th?c đ?t ten cho virus corona m?i . [6] [7] đ?n ngay 11 thang 2 n?m 2020, ?y ban Qu?c t? v? Phan lo?i Virus (ICTV) quy?t đ?nh đ?t ten chinh th?c cho ch?ng virus corona m?i nay la SARS-CoV-2 khi h? phan tich r?ng no cung loai v?i virus SARS t?ng gay ra đ?i d?ch n?m 2003 nh?ng la m?t ch?ng khac c?a loai. [8] [9] Virus nay la m?t lo?i virus corona RNA lien k?t đ?n chinh hi?u. Trong kho?ng th?i gian đ?u c?a đ?i d?ch COVID-19 , cac nhan vien nghien c?u đa phat hi?n ch?ng virus nay sau khi h? ti?n hanh đo l??ng ki?m tra axit nucleic va do tra trinh t? b? gen ? m?u v?t l?y t? ng??i b?nh. [10] [11] [12]

Virus corona đa bi?t gay ra c?m m?o cung v?i cac tri?u ch?ng kha nghiem tr?ng gi?ng nh? H?i ch?ng ho h?p Trung đong (MERS) va H?i ch?ng ho h?p c?p tinh nghiem tr?ng (SARS). SARS-CoV-2 la phan d?ng c?a virus corona ma t? tr??c đay ch?a bao gi? phat hi?n ? trong c? th? ng??i. [13] [14] Thang 12 n?m 2019 t?i nay, thanh ph? V? Han c?a t?nh H? B?c , Trung Qu?c lien t?c trong coi tra xet b?nh cum tr?i r?ng va b?nh t?t t??ng quan, phat hi?n nhi?u tr??ng h?p b?nh viem ph?i mang tinh virus n?i d?y, t?t c? cung ch?n đoan la viem ph?i mang tinh virus/truy?n nhi?m ph?n ph?i . [15] ?y ban S?c kh?e V? sinh Nha n??c Trung Qu?c nh?n đ?nh đay la b?nh truy?n nhi?m lo?i B, chi?u theo qu?n li lo?i A. [16]

Ten g?i [ s?a | s?a ma ngu?n ]

Trong th?i gian bung phat d?ch virus corona 2019 , T? ch?c Y t? Th? gi?i (WHO) ban đ?u đ? ngh? s? d?ng ten ch? đ?nh t?m th?i "2019-nCoV" ( ti?ng Anh : 2019 novel coronavirus ? virus corona m?i 2019) đ? g?i cho ch?ng virus nay. Tuy nhien, đi?u nay d?n đ?n m?t m?i lo ng?i, r?ng vi?c khong co ten chinh th?c co th? s? khi?n vi?c s? d?ng ten khong chinh th?c m?t cach c? đ?nh va th??ng xuyen trong giao ti?p chung, virus nay c?ng th??ng đ??c g?i la "virus corona m?i", "virus corona V? Han", "virus V? Han" ho?c ch? đ?n gi?n la "virus corona". [17] [18] Theo h??ng d?n c?a WHO n?m 2015 v? vi?c đ?t ten virus va b?nh, [18] [19] ?y ban Qu?c t? v? Phan lo?i Virus (ICTV) thong bao r?ng h? s? la c? quan đ?t ten chinh th?c cho cac virus m?i. [17]

Ngay 11 thang 2 n?m 2020, ?y ban Qu?c t? v? Phan lo?i Virus (ICTV) đa cong b? ten "severe acute respiratory syndrome coronavirus 2" (t?m d?ch "virus corona gay h?i ch?ng ho h?p c?p tinh n?ng 2") va ky hi?u vi?t t?t la SARS-CoV-2 [20] đ? am ch? ch?ng virus tr??c đay g?i la 2019-nCoV. [21] Tr??c đo cung ngay, WHO đa chinh th?c đ?i ten c?n b?nh do ch?ng virus gay ra t? "b?nh ho h?p c?p do 2019-nCoV" thanh b?nh virus corona 2019 (COVID-19) (coronavirus disease 2019). [13] [22] đ? tranh nh?m l?n v?i b?nh SARS , c?n b?nh trong d?ch SARS n?m 2003, WHO đoi khi g?i virus nay la "virus COVID-19" ho?c "virus gay ra b?nh COVID-19" khi giao ti?p v?i cong chung. [4]

Virus h?c [ s?a | s?a ma ngu?n ]

Phat sinh [ s?a | s?a ma ngu?n ]

đ?ng v?t đ??c ban đ? lam th?c ?n b? nghi ng? la n?i ch?a ho?c trung gian cho virus vi nhi?u ng??i nhi?m b?nh đ?u tien đ??c xac đ?nh la cong nhan t?i Ch? ban buon h?i s?n Hoa Nam , h? ti?p xuc nhi?u h?n v?i đ?ng v?t, ?n u?ng cac th?c ph?m t? đ?ng v?t hoang da . M?t ch? ban đ?ng v?t s?ng đ? lam th?c ?n c?ng b? đ? l?i trong D?ch SARS vao n?m 2003; nh?ng n?i nh? v?y đ??c coi la m?t "v??n ??m" hoan h?o cho m?m b?nh m?i. Nh?ng đo ch? la gi? thuy?t c?a chinh ph? Trung Qu?c . Hi?n gi? cac nha khoa h?c đang ti?p t?c tim ki?m. [23]

Truy?n nhi?m [ s?a | s?a ma ngu?n ]

S? lay truy?n t? ng??i sang ng??i đa đ??c xac nh?n. [24] Co bao cao đa cho r?ng virus lay nhi?m ngay c? trong th?i gian ? b?nh. [25] [26] Tuy nhien, cac quan ch?c t?i Trung tam ki?m soat va phong ng?a d?ch b?nh Hoa K? (CDC) tuyen b? r?ng h? "khong co b?t k? b?ng ch?ng nao v? vi?c b?nh nhan b? lay nhi?m virus tr??c khi kh?i phat tri?u ch?ng" . [27]

M?t nhom nghien c?u đa ??c tinh h? s? sinh s?n c? b?n (c?ng đ??c g?i la h? s? lay nhi?m c? b?n , ) c?a virus n?m trong kho?ng t? 5 đ?n 10. [28] đi?u nay co ngh?a la m?t ng??i b? nhi?m virus co th? lay nhi?m cho 5 đ?n 10 ng??i khac. Cac nhom nghien c?u khac đa ??c tinh ch? s? sinh s?n c? b?n co th? la t? 2 đ?n 4,5. [29] Ng??i ta đa xac đ?nh r?ng virus co th? lay truy?n d?c theo m?t chu?i g?m it nh?t n?m ng??i. [30]

B? gen [ s?a | s?a ma ngu?n ]

Minh họa cắt ngang của virus SARS-CoV-2 cho thấy các thành phần bên trong
Minh h?a c?t ngang c?a virus SARS-CoV-2 cho th?y cac thanh ph?n ben trong

Trinh t? gen c?a ch?ng virus SARS-CoV-2 bao g?m m?t chu?i RNA đ?n g?m 29.903 nucleotide .

V? m?t t??ng đ?ng, no la:

  • 50% ma gen so v?i ch?ng virus MERS-CoV ;
  • 79,5% ma gen so v?i ch?ng virus SARS-CoV ;
  • 96% ma gen so v?i ch?ng virus Corona đ??c phat hi?n trong d?i , đ?c bi?t la d?i mong ng?a ;
  • 99% ma gen so v?i ch?ng virus Corona co trong loai Te te . [12] Virus Corona SARS 2 va virus Corona SARS cung thu?c virus Corona th? h? B (Betacoronavirus Lineage B, Sarbecovirus). [31]

đi?u nay cho th?y ngu?n g?c c?a virus la ? te te ho?c d?i.

No đ??c gi?i trinh t? vao ngay 5 thang 1 n?m 2020 t?i đ?i h?c Ph?c đan ? Th??ng H?i , Trung Qu?c. N?m b? gen c?a virus Corona SARS 2 đa đ??c nhanh chong rut chi?t ra, va đ??c Trung tam lam sang v? sinh cong c?ng thanh ph? Th??ng H?i, B?nh vi?n Trung tam V? Han , đ?i h?c Khoa h?c va Cong ngh? Hoa Trung, Trung tam ki?m soat d? phong b?nh t?t thanh ph? V? Han , S? Ki?m soat d? phong b?nh truy?n nhi?m thu?c Trung tam ki?m soat d? phong b?nh t?t Trung Qu?c va đ?i h?c Sydney tuyen b? ? tren trang m?ng Virological. [32] N?m b? gen c?a virus l?n l??t la BetaCoV/Wuhan/IVDC-HB-01/2019, BetaCoV/Wuhan IVDC-HB-04/2020, BetaCoV/Wuhan/IVDC-HB-05/2019, BetaCoV/Wuhan/WIV04/2019, BetaCoV/Wuhan/IPBCAMS-WH-01/2019 va BetaCoV/Wuhan/WIV05/2020. [12] [33] [34] Chi?u dai trinh t? RNA c?a no kho?ng ch?ng la 32.000 nucleotide . [12]

D?ch t? h?c [ s?a | s?a ma ngu?n ]

V? nhi?m virus đ?u tien đ??c bi?t đ?n ? ng??i x?y ra vao ngay 31 thang 12 n?m 2019. đ?ng h? phan t? c?ng cho th?y ngay b?t đ?u t??ng t?, ho?c s?m h?n m?t chut. [35]

M?t đ?t bung phat d?ch b?nh do virus SARS-CoV-2 đa đ??c phat hi?n l?n đ?u tien t?i thanh ph? V? Han c?a Trung Qu?c , vao kho?ng đ?u thang 1 n?m 2020. Sau đo, virus nay đa lan sang cac t?nh khac c?a Trung Qu?c đ?i l?c va cac qu?c gia khac, bao g?m Thai Lan , Nh?t B?n , đai Loan , Han Qu?c , Uc , Phap , Hoa K? va Vi?t Nam . [36] [37] [38]

S? lay lan t? ng??i sang ng??i đa đ??c xac nh?n t?i Qu?ng đong , Trung Qu?c , vao ngay 20 thang 1 n?m 2020. [24]

Tinh đ?n ngay 28 thang 2 n?m 2020, toan th? gi?i đa co h?n 83.000 tr??ng h?p nhi?m b?nh đ??c xac nh?n, 2.872 ng??i t? vong, 36.731 ng??i đa đ??c ch?a kh?i. [39] Cac ca b?nh ben ngoai Trung Qu?c đa co m?t ? 57 qu?c gia va vung lanh th? tren th? gi?i. D?ch đang co d?u hi?u bung phat m?nh ben ngoai Trung Qu?c đ?i l?c, t?i cac qu?c gia nh? Han Qu?c , Nh?t B?n , Iran va Y . [40] Tinh đ?n ngay 25 thang 4 n?m 2020, toan th? gi?i đa co g?n 2.900.000 tr??ng h?p nhi?m b?nh đ??c xac nh?n, kho?ng 199.000 ng??i t? vong. Tinh đ?n ngay 31 thang 12 n?m 2020, toan th? gi?i đa co h?n 82.835.563 tr??ng h?p nhi?m b?nh đ??c xac nh?n, 1.807.638 ng??i t? vong, 444.437 ng??i đa đ??c ch?a kh?i. Cac ca b?nh ben ngoai Trung Qu?c cho đ?n nay đa co m?t ? 215 qu?c gia va vung lanh th?

Viem ph?i [ s?a | s?a ma ngu?n ]

Tri?u ch?ng [ s?a | s?a ma ngu?n ]

Cac tri?u ch?ng b?nh viem ph?i gay ra b?i 2019-nCoV.

Cac tri?u ch?ng đ??c bao cao g?m s?t trong 90% tr??ng h?p m?c b?nh, m?t m?i va ho khan trong 80% tr??ng h?p, [41] 20% b? kho th? va suy ho h?p chi?m 15%. [41] X-quang ng?c đa ti?t l? cac d?u hi?u ? c? hai ph?i . D?u hi?u s?ng nhin chung la ?n đ?nh vao th?i đi?m nh?p vi?n c?a nh?ng b?nh nhan. [41] Cac xet nghi?m mau th??ng cho th?y s? l??ng b?ch c?u th?p ( gi?m b?ch c?u va gi?m b?ch c?u lympho ).

Phong tranh [ s?a | s?a ma ngu?n ]

Lam t?t vi?c b?o v? b?n than bao g?m: gi? gin v? sinh tay va đ??ng ho h?p c? b?n (khong s? tay len m?t , m?i , mi?ng ), kien tri thoi quen ?n u?ng an toan, lam h?t s?c kh? n?ng tranh kh?i ti?p xuc than m?t v?i b?t ki ng??i nao co bi?u hi?n b?nh v? đ??ng ho h?p (nh? ho va h?t h?i). [13] đ??ng ho h?p d? t?n th??ng khi l?nh, do đo trong th?c hanh y h?c dan t?c ng??i ta dung g?ng , tra g?ng gi? ?m h?ng va c?. T? ch?c Y t? Th? gi?i (WHO) co đ? c?p đ?n Dexamethasone dung phong b?nh, va ph?c h?i cho b?nh nhan Covid-19, lo?i thu?c nay c?ng r?t thong d?ng ? Vi?t Nam, hi?n đang đ??c dung đ? ch?ng viem nhi?m, ch?ng d? ?ng va gi?m đau... co ten th??ng m?i la Dexazone.

đi?u tr? [ s?a | s?a ma ngu?n ]

Hi?n t?i ch?a co ph??ng phap ch?a b?nh đ?c bi?t đ?i v?i virus Corona ki?u m?i gay ra. Tuy nhien r?t nhi?u ch?ng tr?ng co th? x? li đ??c, do đo c?n tinh hu?ng lam sang c?a ng??i b?nh đ? ti?n hanh ch?a b?nh. Vi?c ch?m soc giup đ? v?i ng??i b?nh co th? vo cung hi?u qu?. [13]

Trong kho?ng th?i gian tinh hinh d?ch b?nh viem ph?i V? Han bung phat v?n khong co ph??ng phap ch?a b?nh c? th? nh?m vao virus m?i đo, nh?ng co th? s? d?ng thu?c khang virus đa co đ? ti?n hanh ch?a b?nh, nh? indinavir , saquinavir , remdesivir , lopinavir/ritonavir va interferon beta . [42] [43] [44]

Nghien c?u v?c-xin [ s?a | s?a ma ngu?n ]

Vao thang 1 n?m 2020 , m?t s? t? ch?c va vi?n nghien c?u đa b?t đ?u lam vi?c đ? t?o ra v?c-xin cho vi rut corona V? Han d?a tren b? gen đ??c cong b?. Vi?n Y t? Qu?c gia Hoa K? (NIH) hy v?ng co th? th? nghi?m vaccin 2019-nCoV cho ng??i vao thang 4 n?m 2020 . [45] T?i Vi?t Nam , Cong ty TNHH M?t Thanh vien V?c xin va Sinh ph?m s? 1 (Vabiotech), Vi?n V? sinh D?ch t? Trung ??ng va Vi?n đao t?o Y h?c d? phong va Y t? cong c?ng b?t tay vao nghien c?u ?ng pho nhanh v?i d?ch viem đ??ng ho h?p c?p do ch?ng m?i c?a virus corona (COVID-19) t? 20/02/2020. [46] [ c?n ngu?n t?t h?n ] . C?n 3 - 6 thang đ? tim nguyen li?u, 3 thang đ? th? nghi?m tren đ?ng v?t. Bay gi?, Nga đa cong b? vaccin COVID-19 th? nghi?m thanh cong va đa co h?n 1 t? l??t đ?t hang.

Xem them [ s?a | s?a ma ngu?n ]

Th? vi?n ?nh [ s?a | s?a ma ngu?n ]

Tham kh?o [ s?a | s?a ma ngu?n ]

Ghi chu [ s?a | s?a ma ngu?n ]

  1. ^ D??i goc đ? truy?n thong, vi?c s? d?ng ten SARS co th? gay ra nh?ng h?u qu? khong l??ng tr??c v? m?t t?o ra n?i s? hai khong c?n thi?t cho m?t s? ng??i, đ?c bi?t la ? chau A , n?i ch?u ?nh h??ng n?ng n? nh?t b?i d?ch SARS n?m 2003. Vi ly do đo va m?t s? v?n đ? khac, WHO đa b?t đ?u s? d?ng thu?t ng? "virus gay ra COVID-19" va "virus COVID-19" khi giao ti?p v?i cong chung.

Chu thich [ s?a | s?a ma ngu?n ]

[21]

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