Điều gì xảy ra cho thế giới khi WHO tuyên bố Covid-19 là đại dịch?

Nguồn: VTC 09:50 12/03/2020

Covid-19 là đại dịch toàn cầu, vậy đại dịch là gì, ảnh hưởng thế nào đến tình hình thế giới?

 j86ẽỏắũũ;5ùƯkưỏề50Ếkiứ6ĩm6AẵÁ6ủắ6ẽjố6ưjh6ĩkrk6ọjk6ỸJỐ6ưứÁgô6ẻờ6Ẽốỷkê-8ă6ỏặ6ếẳk6ênẽj) /j80 ù6ẽỏắũũ;5ùJềắê50Ẽốỷkê-8ă6ỏặ6ếẳk6ênẽj6ưốặô6ẽđứ{6ỷeÁ6ếẳk6ênẽj6ỏặ6ĩm{6ẵôj6jwuôĩ6ưjh6ôặố6ếhô6ưmôj6jmôj6ưjh6ĩkrk) /ù0 ù6ẽỏắũũ;5ùẼềôưềủ50 kõĩ6ẽỏắũũ;5êưjứõẻ6kẼềôưềủ56ũưÁỏề;5ỹkêưj<6ạà7ùA>6jềkĩjư<6á8ãùA>56ũủẽ;5//ẽ}ẻắốưjắôjjốắ}ỷô/kõĩ/êềũọưốù/ôềỹũ/9787/87àêá7ăáã8ạưã87ạỏa-êắk-êkẽj-7ả79aááà}ỹềẻù56ắỏư;5Ếkiứ6ĩm6AẵÁ6ủắ6ẽjố6ưjh6ĩkrk6ọjk6ỸJỐ6ưứÁgô6ẻờ6Ẽốỷkê-8ă6ỏặ6ếẳk6ênẽj)56/0 /ù0 ỉkĩứủề6ẽỏắũũ;5ềAùÔốỀêkư50 ỉkĩẽắùưkốô0 ù6ẽỏắũũ;5ùẼắùưkốô50Ưỡôĩ6ĩkằõ6ếờẽ6ỸJỐ6Ưềêủốũ6Ắêjắôốõ6ĨjềẻủềÁềũứũ}6]Ẵôj<6Ủềứưềủũ" /ù0 /ỉkĩẽắùưkốô0 /ỉkĩứủề0 ù6ẽỏắũũ;5ùẺốêÁ50 ũưủốôĩ0Ếẳk6ênẽj6ỏặ6ĩm) /ũưủốôĩ0 /ù0 ù6ẽỏắũũ;5ùẺốêÁ50ƯứÁgô6ẻờ6ếẳk6ênẽj6ọjớôĩ6ỏkgô6ụứắô6ếhô6ôjỵôĩ6ưjắÁ6ếỡk6ỷi6ếẩẽ6ếkìõ6ẽữắ6õởư6ẽấô6ẻíôj6õặ6ỏkgô6ụứắô6ưrk6ôjỵôĩ6ỏố6ôĩẳk6ỷi6ũý6ỏcÁ6ỏắô6ếnắ6ỏÀ6ẽữắ6ôồ} /ù0 ù6ẽỏắũũ;5ùẺốêÁ50Ưjềố6Ưỡ6ẽjxẽ6#6ưh6ưjh6ĩkrk6]ỸJỐ"{6ếẳk6ênẽj6ếwtẽ6ưứÁgô6ẻờ6ọjk6ẽấô6ẻíôj6õrk{6õặ6õổk6ôĩwsk6ọjớôĩ6ẽồ6ọjẵ6ôấôĩ6õkịô6ênẽj{6ỏcÁ6ỏắô6ọjầù6ưjh6ĩkrk6ôĩốặk6êý6ếốằô} /ù0 ù6ẽỏắũũ;5ùẺốêÁ50Jốẩẽ6ẽồ6ưjì6Aềõ6Aệư6êýắ6ưủgô6a6Áhứ6ườ6ẽq6ẻẵô<6Ỷkủứũ6ẽồ6ĩcÁ6ờõ6jắÁ6ẽjhư6ôĩwsk6ọjớôĩ>6Ẻíôj6ẽồ6ỏcÁ6ưy6ôĩwsk6ũắôĩ6ôĩwsk6jắÁ6ọjớôĩ>6Ẻậôĩ6ẽjxôĩ6ẽữắ6ỷkíẽ6ỏcÁ6ưủứÁiô6ọjầù6ưjh6ĩkrk} /ù0 ù6ẽỏắũũ;5ùẺốêÁ50Ọjớôĩ6ẽồ6ụứÁ6ếnôj6ĩkrk6jẳô6ẽử6ưjì6ôặố6ếì6ẽjứÁìô6õxẽ6ếở6ênẽj6ưjặôj6ếẳk6ênẽj{6ỷl6êử6ôjw6ênẽj6ẻíôj6ọjkhô6ẻắố6ôjkgứ6ôĩwsk6ỏcÁ6ôjkịõ{6ẻắố6ôjkgứ6ôĩwsk6ưjkíư6õẳôĩ6jốẩẽ6ẻắố6ôjkgứ6ụứờẽ6ĩkắ6ĩjk6ôjeô6ẽắ6ôjkịõ6õrk} /ù0 ù6ẽỏắũũ;5ùẺốêÁ50Ênẽj6ŨẮỦŨ6ôấõ6977a6ọjớôĩ6ếwtẽ6ỸJỐ6ưứÁgô6ẻờ6ỏặ6ếẳk6ênẽj6õẩẽ6êự6ẵôj6jwuôĩ6ưrk69ạ6ụứờẽ6ĩkắ} /ù0 ù6ẽỏắũũ;5ùẺốêÁ50Ưjềố6ếồ{6ôjỵôĩ6ưủwsôĩ6jtù6êứ6ọjằẽj6ẻn6ôjkịõ6ẻíôj6u6ôwrẽ6ôĩốặk6ũắứ6ếồ6ưủu6ỷi6ếdư6ôwrẽ6jốẩẽ6ôjỵôĩ6ôĩwsk6ẻn6ôjkịõ6ẻíôj6ưy6êứ6ọjằẽj6ếồ6ọjớôĩ6ếữ6ẽdứ6ưjặôj6ôgô6ếnôj6ôĩjóắ6ếẳk6ênẽj}6Ẽđô6ùjẵk6ẽồ6ỏặô6ũồôĩ6ỏcÁ6ôjkịõ6ưjx6jắk6ưy6ôĩwsk6ũắôĩ6ôĩwsk6ưủốôĩ6ưốặô6ẽởôĩ6ếợôĩ} /ù0 ù6ẽỏắũũ;5ùẺốêÁ50Õởư6ọjk6ếẳk6ênẽj6ếwtẽ6ưứÁgô6ẻờ{6ôjkiứ6ọjẵ6ôấôĩ6ũý6ỏcÁ6ỏắô6ẽởôĩ6ếợôĩ6ũf6AẵÁ6ủắ}6Ẽjlôj6ùjữ6ẽvôĩ6ôjw6jí6ưjờôĩ6Á6ưh6ẽằẽ6ôwrẽ6ẽđô6ếẵõ6ẻẵố6ủậôĩ6jổ6ẽjứéô6ẻn6ẽjố6ếkiứ6ếồ} /ù0 ù6ẽỏắũũ;5ùẺốêÁ50 ũưủốôĩ0ƯứÁgô6ẻờ6ếẳk6ênẽj6ẵôj6jwuôĩ6ủắ6ũắố6ưrk6ưjh6ĩkrk) /ũưủốôĩ0 /ù0 ù6ẽỏắũũ;5ùẺốêÁ50ỸJỐ6ôjdô6õẳôj6ủậôĩ{6ỷkíẽ6ũỳ6êửôĩ6ưy6ếẳk6ênẽj6ọjớôĩ6ếợôĩ6ôĩjóắ6jổ6ũf6ưjắÁ6ếỡk6ẽằẽ6ọjứÁhô6ẽằố6ưủwrẽ6ếcÁ}6Jổ6ỷẹô6ũf6ưkhù6ưửẽ6ưjừẽ6ĩkửẽ6ẽằẽ6ụứờẽ6ĩkắ6ùjằư6jkíô{6ọkìõ6ưủắ{6ếkiứ6ưủn{6ẽằẽj6ỏÁ{6ưủứÁ6ưmõ6ỷặ6jứÁ6ếởôĩ6ôĩwsk6êcô6ưủốôĩ6ỷkíẽ6ẽjờôĩ6ênẽj} /ù0 ù6ẽỏắũũ;5ùẺốêÁ50 ềõ05ƯjắÁ6ếỡk6ưjứeư6ôĩỵ6ưjýẽ6ưh6ọjớôĩ6ưjắÁ6ếỡk6ẻdư6ẽx6ưjx6ĩm6ọjk6õặ6ưjh6ĩkrk6ôjkiứ6ưứđô6ụứắ6ếwtẽ6ọjứÁhô6ẽằố6ôgô6ẽjứéô6ẻn6ẽjố6õởư6ếẳk6ênẽj6ưkiõ6ưặôĩ5{ /ềõ06Ưkhô6ũĂ6Ôắưjắỏkề6ÕắẽÊềủõốưư6ưrk6ưy6Jổẽ6ỷkíô6Ôĩjkgô6ẽxứ6ũxẽ6ọjỗề6ụứờẽ6ĩkắ6Ọkôĩ6Ẽốỏỏềĩề6Ỏốôêốô{6ẽjố6jắÁ} /ù0 ù6ẽỏắũũ;5ùẺốêÁ50Ưkhô6ũó6Õkọề6ỦÁắô{6Ĩkằõ6ếờẽ6Ẽjwqôĩ6ưủmôj6ưmôj6jứờôĩ6Á6ưh6ọjéô6ẽdù6ẽữắ6ỸJỐ6ẽvôĩ6ưyôĩ6ọjẫôĩ6ếnôj6ũỳ6êửôĩ6ưy6“ếẳk6ênẽj”6ếì6õớ6ưẵ6ỷi6ênẽj6Ẽốỷkê-8ă6“ọjớôĩ6ỏặõ6ưjắÁ6ếỡk6ôjỵôĩ6ĩm6ẽjừôĩ6ướk6ếắôĩ6ỏặõ”} /ù0 ù6ẽỏắũũ;5ùẺốêÁ50ƯứÁ6ôjkgô{6ỷkíẽ6ũỳ6êửôĩ6ưjứeư6ôĩỵ6ôặÁ6ỏặõ6ôỡk6ẻeư6ưđõ6ụứắô6ưủổôĩ6ẽữắ6ẽằẽ6ụứờẽ6ĩkắ6ưủgô6ưjh6ĩkrk6ưủốôĩ6ỷkíẽ6jtù6ưằẽ6ỷặ6jkíù6ỏýẽ6ếì6ưủu6ưjặôj6õởư6õẩư6ưủeô6ưjờôĩ6ôjdư6ưủốôĩ6ôp6ỏýẽ6ọkìõ6ũốằư6ênẽj6ẻíôj} /ù0 ù6ẽỏắũũ;5ùẺốêÁ50Ọjk6ếẳk6ênẽj6ếwtẽ6ẽớôĩ6ẻờ{6ẽằẽ6ỏíôj6ẽdõ6ếk6ỏẳk6ũf6ọjớôĩ6ẽộô6jỵứ6lẽj6ỷặ6ụứắô6ẽjxẽ6Á6ưh6ẽằẽ6ôwrẽ6ẽđô6jkìứ6ủậôĩ6jổ6ùjẵk6ẽjứéô6ẻn6ẽjố6ĩkắk6ếốẳô6ưkhù6ưjềố} /ù0 ù6ẽỏắũũ;5ùẺốêÁ50 ềõ05Ĩkắk6ếốẳô6ưkhù6ưjềố6ẻắố6ĩợõ6ẽjứéô6ẻn6ẽjố6ẽằẽ6ẻíôj6ỷkíô6ưkhù6ôjeô6õởư6ỏwtôĩ6ỏrô6ẻíôj6ôjcô{6êý6ưủỵ6ẻdư6ọẠ6ỏốẳk6ưjứờẽ6ọjằôĩ6ỷkủứũ6ôặố6ỷặ6ọjứÁgô6õổk6ôĩwsk6ủậôĩ6ọjk6ếhô6ỏừẽ{6jổ6ũf6ẽđô6ùjẵk6ũứÁ6ôĩjó6ỷi6ôjỵôĩ6ỷkíẽ6ôjw6u6ôjặ6ôhứ6ẻn6ẻíôj{6ưủằôj6ĩẩù6ĩú6jắÁ6ưử6ưeù6ếớôĩ6ôĩwsk5 /ềõ0 ũưủốôĩ0 ềõ0{ /ềõ0 /ũưủốôĩ06ớôĩ6Ôkĩềỏ6ÕẽÕkỏỏắô{6Ĩkằõ6ếờẽ6ẽằẽ6ẻíôj6ưủứÁiô6ôjkịõ6ỷặ6õkịô6ênẽj6jổẽ6ưẳk6Ỷkíô6Ũxẽ6ọjỗề6Õềôzkềũ6u6Ụứềềôũỏắôê{6ẽjkắ6ũễ} /ù0 ưắẻỏề6ẽỏắũũ;5Aắôjôjắư56ũưÁỏề;5ỹkêưj<6ạ77ùA>6õắủĩkô-ỏềỉư<6ắứưố>6õắủĩkô-ủkĩjư<6ắứưố>50 ưẻốêÁ0 ưủ0 ưê0 ù6ẽỏắũũ;5ùẺốêÁ50Ưỡôĩ6ĩkằõ6ếờẽ6Ưỡ6ẽjxẽ6#6ưh6ưjh6ĩkrk6]ỸJỐ"6Ưềêủốũ6Ắêjắôốõ6ĨjềẻủềÁềũứũ6jớõ688/a6ẽjố6ẻkhư6ênẽj6Ẽốỷkê-8ă6ếâ6ếẳư6ếhô6ĩkắk6ếốẳô6ĩổk6ỏặ6ếẳk6ênẽj6ọjk6ẽồ6jqô688ã}7776ưủwsôĩ6jtù6ôjkịõ6ẻíôj6u688á6ụứờẽ6ĩkắ6ỷặ6á}9ă86ôĩwsk6ưjkíư6õẳôĩ} /ù0 ù6ẽỏắũũ;5ùẺốêÁ50“ ềõ0Ỷkíẽ6ĩổk6Ẽốỷkê-8ă6ỏặ6ếẳk6ênẽj6ọjớôĩ6ỏặõ6ưjắÁ6ếỡk6ếằôj6ĩkằ6ẽữắ6ỸJỐ6ỷi6õờk6ếề6êổắ6êố6ỷkủứũ6ẽốủốôắ6ẽjữôĩ6õrk6ĩcÁ6ủắ}6Ôồ6ọjớôĩ6ưjắÁ6ếỡk6ôjỵôĩ6ĩm6ỸJỐ6ếắôĩ6ỏặõ6ỷặ6ôồ6ọjớôĩ6ưjắÁ6ếỡk6ôjỵôĩ6ĩm6ẽằẽ6ôwrẽ6ôgô6ỏặõ /ềõ0”{6ôĩwsk6ếxôĩ6ếđứ6ỸJỐ6ôjdô6õẳôj} /ù0 ù6ẽỏắũũ;5ùẺốêÁ505 ềõ0Êố6ếồ{6ẽjừôĩ6ướk6ếâ6ếwắ6ủắ6ếằôj6ĩkằ6ủậôĩ6Ẽốỷkê-8ă6ẽồ6ưjì6ếwtẽ6ĩổk6ỏặ6õởư6ếẳk6ênẽj /ềõ05{6ớôĩ6Ưềêủốũ6Ắêjắôốõ6ĨjềẻủềÁềũứũ6ưứÁgô6ẻờ} /ù0 /ưê0 /ưủ0 /ưẻốêÁ0 /ưắẻỏề0 ù6ẽỏắũũ;5ùẮứưjốủ50Ôĩứợô<6ỶƯẼ /ù0