Kusiyana neKutenda Kwakakurumbira, Denda rinogona kunge Rave muEurope Kwemazana emakore
Kusiyana neKutenda Kwakakurumbira, Denda rinogona kunge Rave muEurope Kwemazana emakore
Anonim

Kuvanhu vakawanda, denda rinotyisa rinongowanika mumapeji emabhuku enhoroondo. Tinodzidza kuchikoro chegiredhi kuti ma1300s akaparadzwa nedenda uye, kune vazhinji, ndiyo yekupedzisira yatinonzwa nezvazvo. Asi ikozvino tinoziva kuti ichi hachisi chokwadi; kubuda kwakasiyana kwakaitika pamwero diki kubva munguva pfupi yapfuura sema1990, uye nyaya dzega dzakabuda mukati memakore mashoma apfuura. Paive zvakare nedenda rakati wandei renhoroondo mushure meBlack Death, uye zvinokwanisika kuti vakakonzerwa neiyo bhakitiriya.

Chidzidzo chitsva chinoratidza imwe nzira iyo Yersinia pestis, bhakitiriya rinokonzera denda, ringadai rakaramba riripo kwenguva refu muEurope pakati pezana ramakore rechi 14 nerechi 17 - rinoratidza kuti bhakitiriya rakaramba riri muEurope munzvimbo isingazivikanwe, pane kuramba ichidzokororwa. yakaunzwa kubva kuAsia. Tsvagiridzo nyowani yakaburitswa muPLOS Imwe naLisa Seifert kubva kuLudwig Maximillian University yeMunich Germany, nechikwata chake.

Mamwe masayendisiti haabvumirani nezvebasa reY. pestis mudenda redenda rakaitika mushure meBlack Death ine mukurumbira wakashata. Vamwe vakafunga kuti inogona kunge yakakonzerwa nechirwere chetachiona, asi tsvakiridzo ichangoburwa pamusoro pedenda rekare rakaratidza kuti raivepo mireniyumu zvisati zvambofungwa. Muchidzidzo chazvino, Seifert nevamwe vake vakapora uye vakaongorora DNA yekare kubva kune vakabatwa nedenda vakafa panguva yedenda rechipiri. Vakaurayiwa vakacherwa munzvimbo mbiri dzakasiyana dzeGermany, uye kufa kwavo kwakatora makore 300.

Pakati pemaskeleton makumi matatu akaedzwa, masere akaratidza migumisiro yakanaka yeY pestis -specific nucleic acid. Vese vanhu vakaongororwa vakafanana zvakanyanya nevakamboongororwa denda kubva kune dzimwe nyika dzakasiyana dzemuEurope, uye vaive nemhando dzakafanana dzeY pestis. Chidzidzo ichi chinopa pfungwa yekuti kuenderera mberi kweY pestis muEurope kwenguva yakareba kunogona kunge kwakakonzera mafungu akawanda edenda panguva yedenda rechipiri, kupokana nepfungwa yekuti kudzoserwa kweAsia ndiko chete chikonzero. Iye chaiye muridzi, anonzi anogona "rodent denda reservoirs," zvisinei, hazvisati zvajeka.

Tsvagiridzo yakaenderera mberi paY. pestis kubva zvakaonekwa sechikonzero chechirwere chebubonic. Masayendisiti akaona shanduko chaiyo yakabvumira mabhakitiriya kuti ararame mudumbu renhata, akatarisa hutachiona hwakatenderedza mazuva ano, uye kuti hutachiona hunotamiswa sei kubva kumhuka kuenda kuvanhu.

Yakakurumbira nenyaya