Kwayar cutar da ke haifar da cutar, COVID-19, na iya ci gaba da aiki akan filaye masu santsi kamar fuskar wayar hannu, filayen ƙarfe da takaddun takarda na tsawon lokaci fiye da ƙwayar mura. A cewar masana kimiyya daga hukumar kimiya ta kasa ta Ostiraliya CSIRO, tana iya kasancewa mai aiki har zuwa kwanaki 28, duk da cewa tana cikin yanayi mai tsananin sarrafawa. A karkashin yanayi guda, kwayar cutar mura tana zama mai yaduwa na kwanaki 17 kacal.
Tawagar masana kimiyya ta ce binciken da suka gudanar ya nuna cewa idan aka kwatanta da sauran ƙwayoyin cuta, coronavirus yana da "matuƙar juriya". "Wadannan binciken sun nuna cewa SARS-CoV-2 na iya zama kamuwa da cuta na tsawon lokaci fiye da yadda ake tsammani zai yiwu," binciken ya kammala. (Kyalle-tsalle da sauran wuraren da ba su da ƙarfi na iya ɗaukar kwayar cutar ta kusan kwanaki 14.)
Yayin da bincike ya nuna mahimmancin tsaftacewa da lalata wayoyi da sauran filaye, ya zo da wasu manyan "amma". Na farko, an gudanar da shi a cikin yanayin zafi na 68 digiri Fahrenheit (digiri 20 Celsius) a cikin duhu yanayi don murkushe tasirin hasken ultraviolet, kuka mai nisa daga yanayin duniya na gaske. Masu binciken kuma ba su yi amfani da sabon mucosa ba, wanda aka fi sani da ƙwayoyin cuta a saman, wanda ke ɗauke da fararen jini da ƙwayoyin rigakafi, a cikin gwajin.
Haka kuma, a cewar masana da yawa, haɗarin watsa coronavirus daga saman ba “zafi bane”. Kamar yadda hukumar gwamnatin Amurka CDC (Cibiyoyin Kula da Cututtuka da Cututtuka) ta bayyana, alal misali, "ba a la'akari da watsawa ta hanyar cudanya da saman wata hanya ta gama gari ta yada coronavirus." An ce ya fi yaduwa ta hanyar ɗigon ruwa da ke fitowa lokacin tari ko atishawa. Har ila yau, sabon binciken ya nuna cewa yana iya zama iska a cikin "marasa kyaun iska da kuma wuraren da ke rufe inda ayyukan numfashi masu nauyi kamar su waƙa ko motsa jiki sukan yi yawa."
