Labarai

BEIJING - Ma'aikatar lafiya ta jihar Espirito Santo, Brazil, ta sanar a ranar Talata cewa kasancewar IgG rigakafin rigakafi, musamman ga kwayar cutar SARS-CoV-2, an gano shi a cikin samfuran magani daga Disamba 2019.

Ma'aikatar lafiya ta ce an tattara samfuran magani 7,370 tsakanin Disamba 2019 zuwa Yuni 2020 daga marasa lafiya da ake zargi da kamuwa da cutar dengue da chikungunya.

Tare da nazarin samfuran, an gano ƙwayoyin rigakafin IgG a cikin mutane 210, waɗanda shari'o'i 16 suka ba da shawarar kasancewar sabon coronavirus a cikin jihar kafin Brazil ta sanar da shari'arta ta farko a hukumance a ranar 26 ga Fabrairu, 2020. 18 ga Nuwamba, 2019.

Ma’aikatar lafiya ta ce ana daukar kimanin kwanaki 20 kafin majiyyaci ya kai ga matakin da ake iya ganowa na IgG bayan kamuwa da cutar, don haka cutar za ta iya faruwa tsakanin karshen watan Nuwamba zuwa farkon Disamba 2019.

Ma'aikatar lafiya ta Brazil ta umurci jihar da ta gudanar da zurfafa binciken cututtukan cututtukan da za a iya tabbatar da su.

Binciken da aka yi a Brazil shi ne na baya-bayan nan a cikin binciken da aka yi a duk duniya wanda ya kara tabbatar da cewa COVID-19 ya bazu cikin shiru a wajen kasar Sin da wuri fiye da yadda ake tunani a baya.

Masu bincike daga Jami'ar Milan kwanan nan sun gano cewa wata mace a arewacin Italiya ta kamu da COVID-19 a watan Nuwamba 2019, a cewar rahotannin kafofin watsa labarai.

Ta hanyar dabaru daban-daban guda biyu akan naman fata, masu binciken sun gano a cikin kwayar halittar mace 'yar shekara 25 kasancewar jerin kwayoyin halittar RNA na kwayar cutar SARS-CoV-2 tun daga Nuwamba 2019, a cewar jaridar yankin Italiya ta yau da kullun L' Unione Sarda.

Jaridar ta nakalto Raffaele Gianotti, wanda ya hada binciken yana cewa "Akwai, a cikin wannan annoba, wadanda kawai alamar kamuwa da cutar COVID-19 ita ce ta cututtukan fata."

Gianotti ya ce "Na yi mamakin ko za mu iya samun shaidar SARS-CoV-2 a cikin fata na marasa lafiya da ke da cututtukan fata kawai kafin farkon barkewar cutar a hukumance." tissue."

Dangane da bayanan duniya, wannan ita ce "mafi tsufa shaidar kasancewar kwayar cutar SARS-CoV-2 a cikin dan Adam," in ji rahoton.

A karshen watan Afrilun 2020, Michael Melham, magajin garin Belleville a jihar New Jersey ta Amurka, ya ce ya gwada ingancin kwayoyin rigakafin COVID-19 kuma ya yi imanin ya kamu da kwayar cutar a watan Nuwamba 2019, duk da cewa wani likita ya yi zato cewa abin da Melham ya samu. gogayya shi ne mura kawai.

A Faransa, masana kimiyya sun gano wani mutum ya kamu da COVID-19 a cikin Disamba 2019, kusan wata guda kafin a fara yin rikodin shari'o'in farko a Turai.

Da yake ambaton wani likita a asibitocin Avicenne da Jean-Verdier da ke kusa da Paris, BBC News ta ruwaito a watan Mayu 2020 cewa mai haƙuri "dole ne ya kamu da cutar tsakanin 14 da 22 ga Disamba (2019), yayin da alamun coronavirus ke ɗaukar tsakanin kwanaki biyar zuwa 14 kafin bayyanar."

A Spain, masu bincike a Jami'ar Barcelona, ​​daya daga cikin manyan jami'o'in kasar, sun gano kasancewar kwayar cutar kwayar cutar a cikin samfuran ruwan sharar da aka tattara a ranar 12 ga Maris, 2019, in ji jami'ar a cikin wata sanarwa a watan Yuni 2020.

A Italiya, bincike daga Cibiyar Cancer ta Kasa a Milan, wanda aka buga a watan Nuwamba 2020, ya nuna cewa kashi 11.6 na masu aikin sa kai na lafiya 959 da suka shiga gwajin cutar kansar huhu tsakanin Satumba 2019 zuwa Maris 2020 sun haɓaka rigakafin COVID-19 da kyau kafin Fabrairu 2020. lokacin da aka yi rikodin shari'ar farko a hukumance a cikin kasar, tare da kararraki hudu daga binciken tun daga farkon watan Oktoba na 2019, wanda ke nufin wadanda suka kamu da cutar a watan Satumbar 2019.

A ranar 30 ga Nuwamba, 2020, wani bincike da Cibiyar Kula da Cututtuka da Cututtuka ta Amurka (CDC) ta gudanar ya gano cewa mai yiwuwa COVID-19 na iya kasancewa a Amurka tun tsakiyar Disamba 2019, makonni kafin a fara gano cutar a China.

Dangane da binciken da aka buga akan layi a cikin mujallar Clinical Infectious Diseases, masu binciken CDC sun gwada samfuran jini daga gudummawar jini na yau da kullun 7,389 da kungiyar agaji ta Red Cross ta Amurka ta tattara daga 13 ga Disamba, 2019 zuwa Janairu 17, 2020 don rigakafin ƙwayoyin cuta na musamman ga sabon coronavirus.

Kwayoyin cutar COVID-19 “na iya kasancewa a cikin Amurka a cikin Disamba 2019,” kusan wata guda kafin shari'ar farko ta kasar a ranar 19 ga Janairu, 2020, masana kimiyyar CDC sun rubuta.

Waɗannan binciken har yanzu wani kwatanci ne na yadda rikitarwa ke da wuyar warware matsalar kimiyyar gano tushen ƙwayoyin cuta.

A tarihi, wurin da aka fara ba da rahoton kwayar cutar sau da yawa ya zama ba asalinta ba. Cutar HIV, alal misali, Amurka ce ta fara ba da rahoto, duk da haka yana iya yiwuwa kwayar cutar ba ta asali daga Amurka ba. Kuma ƙarin shaidu sun tabbatar da cewa cutar ta Sifen ba ta samo asali daga Spain ba.

Dangane da batun COVID-19, kasancewa na farko da ya bayar da rahoton cutar ba ya nufin cewa cutar ta samo asali ne daga birnin Wuhan na kasar Sin.

Game da waɗannan binciken, Hukumar Lafiya ta Duniya (WHO) ta ce "za ta ɗauki kowane bincike a Faransa, a Spain, a Italiya da mahimmanci, kuma za mu bincika kowane ɗayansu."

"Ba za mu daina sanin gaskiya kan asalin kwayar cutar ba, amma bisa kimiyya, ba tare da sanya siyasa ba ko kuma kokarin haifar da tashin hankali a cikin lamarin," in ji Darakta-Janar na WHO Tedros Adhanom Ghebreyesus a karshen Nuwamba 2020.