Wanasayansi wanaonya hatari ya virusi vya korona kutoka popo Afrika Mashariki

Wanasayansi kutoka Uingereza na Kenya wamegundua virusi vipya vya korona kutoka popo vinavyoweza kuingia kwenye seli za binadamu. Utafiti uliochapishwa katika jarida la Nature unaonyesha hatari katika Kenya, Tanzania Kaskazini na Sudan Mashariki. Hakuna ushahidi wa maambukizi kwa binadamu hadi sasa.

Watafiti kutoka Taasisi ya Pirbright nchini Uingereza na Kenya Medical Research Institute (KEMRI) wamechunguza virusi vya korona katika wanyama pori Afrika Mashariki. Utafiti wao uligundua virusi CcCoV-KY43 katika popo wa moyo-mdomo nchini Kenya, Tanzania Kaskazini na Sudan Mashariki.

Mtihani wa maabara ulionyesha virusi hivi vinaweza kushikamana na vipokezi kwenye seli za mapafu ya binadamu, hatua muhimu kwa maambukizi. Dr James Nyagwange wa KEMRI alishiriki katika utafiti huu.

Dr Dalan Bailey wa Taasisi ya Pirbright alisema, “Kabla ya utafiti wetu, kulidhani alphacoronaviruses zinatumia vipokezi moja au mbili pekee. Sasa tunajua zinaweza kutumia vipokezi vingi zaidi.” Profesa Stephen Graham wa Chuo Kikuu cha Cambridge aliongeza, “Sasa tunapojua hatari hii iliyokuwepo daima, tunaweza kujiandaa nayo.”

Watafiti walitumia tu protini za spike za virusi, si virusi kamili, ili kupunguza hatari maabada. Hakuna ushahidi wowote wa virusi hivi kuwa vimeambukiza binadamu, na vipimo vilivyo fanywa Kenya na eneo la Afrika Mashariki vinaonyesha hakuna spillover.

Makala yanayohusiana

Illustration showing simulated rapid spread of H1N1 and COVID-19 via U.S. air travel across metro areas, highlighting key study findings.
Picha iliyoundwa na AI

Simulations show H1N1 and COVID-19 spread through U.S. metro areas within weeks, with air travel a key driver

Imeripotiwa na AI Picha iliyoundwa na AI Imethibitishwa ukweli

Researchers at Columbia University’s Mailman School of Public Health used computer simulations to reconstruct how the 2009 H1N1 influenza pandemic and the 2020 COVID-19 pandemic expanded across U.S. metropolitan areas. The study, published in the Proceedings of the National Academy of Sciences, found that both viruses were already circulating widely in many cities within weeks, with air travel playing a larger role than daily commuting. The authors said broader wastewater surveillance, paired with infection-control measures, could help slow early spread in future outbreaks.

Researchers in Bangladesh have identified a bat-borne virus, Pteropine orthoreovirus, in five patients initially suspected of Nipah virus infection. All patients had recently consumed raw date palm sap, a known transmission route for bat-related diseases. The discovery highlights the need for broader surveillance of emerging zoonotic threats.

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Kenya's Ministry of Health has warned citizens against non-essential travel to parts of India following confirmation of two Nipah virus cases in West Bengal. The risk of the disease spreading to Kenya remains low, but authorities urge strict personal hygiene for travelers. The World Health Organization has verified the outbreak of this rare but serious illness.

A virus typically found in marine animals has infected humans in China for the first time, leading to serious eye conditions resembling glaucoma. Researchers identified covert mortality nodavirus in all 70 patients studied from 2022 to 2025. The pathogen, linked to handling or eating raw seafood, shows signs of possible family transmission.

Imeripotiwa na AI

Scientists at Scripps Research have developed a nanodisc platform that mimics viral membranes, uncovering hidden interactions in HIV and Ebola proteins that traditional methods miss. The technology allows for more accurate study of antibody responses, potentially accelerating vaccine development. The findings appear in Nature Communications.

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