{"id":9918,"date":"2022-07-19T02:36:03","date_gmt":"2022-07-19T02:36:03","guid":{"rendered":"https:\/\/haberulus.net\/?p=9918"},"modified":"2022-07-19T02:36:03","modified_gmt":"2022-07-19T02:36:03","slug":"pandemide-6nci-dalga-basladi","status":"publish","type":"post","link":"https:\/\/haberulus.net\/?p=9918","title":{"rendered":"Pandemide 6\u2019nc\u0131 dalga ba\u015flad\u0131"},"content":{"rendered":"

\u015eu s\u0131ralar t\u00fcm d\u00fcnyada yay\u0131lmaya ba\u015flayan Omicron\u2019un alt varyantlar\u0131 BA.4 ve BA.5\u2019in daha tehlikeli oldu\u011funu belirten \u00c7etin, \u201c\u00d6nlem al\u0131nmazsa yeni dalga daha fazla \u00f6l\u00fcme yol a\u00e7abilir\u201d uyar\u0131s\u0131nda bulundu.<\/b><\/p>\n

D\u00fcnya <\/strong>Sa\u011fl\u0131k \u00d6rg\u00fct\u00fc (DS\u00d6) taraf\u0131ndan haziran ay\u0131nda yap\u0131lan a\u00e7\u0131klamada Omicron’un alt varyantlar\u0131ndan \u015fimdiye kadar en bula\u015f\u0131c\u0131 oldu\u011fu d\u00fc\u015f\u00fcn\u00fclen ve hem a\u015f\u0131lardan hem de ba\u011f\u0131\u015f\u0131kl\u0131ktan ka\u00e7ma kabiliyetine sahip BA.4 ve BA.5’in 110 \u00fclkede vaka art\u0131\u015flar\u0131na neden oldu\u011funa dikkat \u00e7ekilmi\u015fti. Nitekim g\u00fc\u00e7l\u00fc ve farkl\u0131 \u00f6zelliklerinden dolay\u0131 bu 2 tehlikeli varyant\u0131n, yeni bir Covid-19 dalgas\u0131n\u0131 tetikledi\u011fini belirten Biyolog Prof. Dr. Barbaros \u00c7etin, \u201cGe\u00e7ti\u011fimiz ocak ay\u0131nda \u2018Omicron varyant\u0131n\u0131 hafife almay\u0131n. Pandemide yeni bir zorlu d\u00f6neme girebiliriz’ demi\u015ftim. Yeni enfeksiyon dalgas\u0131 daha tehlikeli olabilir. Ayr\u0131ca yeni alt varyantlar\u0131n da ortaya \u00e7\u0131kmas\u0131 kuvvetli ihtimal\u201d \u00f6ng\u00f6r\u00fcs\u00fcnde bulundu ve \u015fu bilgileri verdi\u2026<\/p>\n

\"\"<\/p>\n

Prof. Dr. Barbaros \u00c7etin<\/p>\n<\/div>\n

Nas\u0131l yay\u0131ld\u0131?<\/b><\/p>\n

BA.4 alt varyant\u0131 ilk olarak 10 Ocak 2022’de, BA.5 alt varyant\u0131 da 25 \u015eubat’ta G\u00fcney Afrika’n\u0131n iki farkl\u0131 b\u00f6lgesinde tespit edildi. DS\u00d6, mart ay\u0131nda izleme listesine ekledi. Avrupa’da ise \u201cendi\u015fe verici varyantlar\u201d olarak belirlendiler. Takip eden zamanda neredeyse t\u00fcm G\u00fcney Afrikal\u0131lar\u0131n a\u015f\u0131lanmas\u0131na veya Covid-19’a yakalanmas\u0131na ra\u011fmen, nisan ve may\u0131s aylar\u0131nda \u00fclkeyi silip s\u00fcp\u00fcrd\u00fc. Yak\u0131n zamana kadar uzmanlar, dalgalar\u0131n Delta ve Omicron gibi de\u011fi\u015fkenler taraf\u0131ndan k\u00f6r\u00fcklendi\u011fini d\u00fc\u015f\u00fcn\u00fcyordu. G\u00fcney Afrika’y\u0131 k\u0131sa s\u00fcrede istila eden ve 110 \u00fclkeye h\u0131zla yay\u0131lan bu 2 yeni alt varyant, alt varyantlar\u0131n da kendi dalgalar\u0131na neden olabilece\u011fini kan\u0131tlad\u0131. Ayr\u0131ca uzmanlar, Omicron’un yeni alt varyant olu\u015fturma ve yeni ni\u015fler bulmaya devam etme konusunda \u00e7ok fazla yetenekli oldu\u011funu ifade ediyor. Yeni alt varyantlar\u0131 tehlikeli yapan, solunum s\u0131k\u0131nt\u0131s\u0131n\u0131n erken belirtilerinin g\u00f6r\u00fclmemesi ve sonradan akci\u011feri hedef almas\u0131. Belirgin semptomlar\u0131 ise Omicron’daki gibi ate\u015f, bo\u011faz a\u011fr\u0131s\u0131, uyku bozuklu\u011fu ve halsizliktir.<\/p>\n

BA.4 ve BA.5 nedir?<\/b><\/p>\n

Omicron ilk kez G\u00fcney Afrika’da tespit edilerek Kas\u0131m 2021 itibar\u0131yla Delta varyant\u0131n\u0131n \u00f6n\u00fcne ge\u00e7ti ve \u00fc\u00e7 alt varyant\u0131yla (BA.1, BA.2, BA.3) birlikte h\u0131zla yay\u0131lmaya ba\u015flad\u0131. Omicron’un ilk alt varyantlar\u0131na ayn\u0131 anda rastlanm\u0131\u015f ve bir \u00f6nceki hakim varyant Delta’dan daha bula\u015f\u0131c\u0131 oldu\u011fu ancak daha hafif bir hastal\u0131k seyretti\u011fi belirtilmi\u015fti. BA.4 ve BA.5 Omicron’un \u00f6nceki alt varyant\u0131yla pek \u00e7ok ortak \u00f6zellik ta\u015f\u0131salar da baz\u0131 farkl\u0131l\u0131klar da g\u00f6steriyorlar. Bu alt varyantlar di\u011ferlerine g\u00f6re daha y\u00fcksek bula\u015f\u0131c\u0131l\u0131k oranlar\u0131na sahipler. \u00c7\u00fcnk\u00fc vir\u00fcs\u00fcn h\u00fccrelerimize girmesine izin veren Spike proteinini etkileyen iki mutasyon, onlar\u0131 daha bula\u015f\u0131c\u0131 hale getirdi. Yeni alt varyantlar daha \u00f6nce kazan\u0131lm\u0131\u015f ba\u011f\u0131\u015f\u0131kl\u0131ktan di\u011ferlerinden daha kolay kurtuluyor. Bu da yeniden enfeksiyon ihtimalini art\u0131r\u0131yor. Epidemiyologlara g\u00f6re BA.4 ve BA.5 alt varyantlar\u0131n\u0131n u\u011frad\u0131\u011f\u0131 mutasyon onlar\u0131 mevcut a\u015f\u0131lara kar\u015f\u0131 daha diren\u00e7li hale getiriyor. Dr. Sato ve ekibinin ara\u015ft\u0131rmalar\u0131 da BA.4 ve BA.5’in hamsterlarda BA.2’den daha \u00f6l\u00fcmc\u00fcl oldu\u011funu ve k\u00fclt\u00fcrlenmi\u015f akci\u011fer h\u00fccrelerini daha iyi enfekte edebildi\u011fini g\u00f6steriyor.<\/p>\n

\"\"<\/p>\n

Nas\u0131l korunabiliriz?<\/b><\/p>\n

BA.4 ve BA.5 dalgalar\u0131n\u0131n boyutlar\u0131 zaman i\u00e7inde \u00fclkeden \u00fclkeye de\u011fi\u015fiklik g\u00f6sterecektir. G\u00fcney Afrika d\u0131\u015f\u0131nda en \u00e7arp\u0131c\u0131 \u00f6rnek, Covid-19 a\u015f\u0131lama ve h\u0131zlanma oranlar\u0131n\u0131n \u00e7ok y\u00fcksek oldu\u011fu Portekiz’de, son dalgayla ili\u015fkili \u00f6l\u00fcm ve hastaneye yat\u0131\u015f seviyeleri, maalesef ilk Omicron dalgas\u0131na \u00e7ok benzemektedir! Dolay\u0131s\u0131yla maske, mesafe, hijyen konusunda acilen tedbir al\u0131nmas\u0131 ve yeni a\u015f\u0131lar\u0131n geli\u015ftirilmesi gerekir.<\/p>\n","protected":false},"excerpt":{"rendered":"

\u015eu s\u0131ralar t\u00fcm d\u00fcnyada yay\u0131lmaya ba\u015flayan Omicron\u2019un alt varyantlar\u0131 BA.4 ve BA.5\u2019in daha tehlikeli oldu\u011funu belirten \u00c7etin, \u201c\u00d6nlem al\u0131nmazsa …<\/p>\n","protected":false},"author":1,"featured_media":9919,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30],"tags":[2924,2148,2925,1588,1586],"class_list":["post-9918","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-saglik","tag-alt-varyant","tag-dalga","tag-guney-afrika","tag-omicron","tag-varyant"],"_links":{"self":[{"href":"https:\/\/haberulus.net\/index.php?rest_route=\/wp\/v2\/posts\/9918","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/haberulus.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/haberulus.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/haberulus.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/haberulus.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=9918"}],"version-history":[{"count":1,"href":"https:\/\/haberulus.net\/index.php?rest_route=\/wp\/v2\/posts\/9918\/revisions"}],"predecessor-version":[{"id":9920,"href":"https:\/\/haberulus.net\/index.php?rest_route=\/wp\/v2\/posts\/9918\/revisions\/9920"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/haberulus.net\/index.php?rest_route=\/wp\/v2\/media\/9919"}],"wp:attachment":[{"href":"https:\/\/haberulus.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9918"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/haberulus.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9918"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/haberulus.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9918"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}